Exhaust Package

SOUL Competition Exhaust Package, Signature Satin Tips (Straight Cut Single Wall).

The SOUL Performance Competition Package is a premium aftermarket exhaust upgrade developed specifically for the Porsche 981 Cayman GT4, Boxster Spyder and GT4 Clubsport models manufactured between 2015 and 2016.

Fits:

• Porsche Boxster 981 Spyder 3.8L 2016
• Porsche Cayman GT4 3.8L 2015-16  

Kit Includes:

• Valved Exhaust System
• Competition Headers

Designed for the naturally aspirated 3.8L flat-six engine, this comprehensive performance package combines SOUL Performance Competition Headers with its electronically controlled Valved Exhaust System.

The package replaces the original exhaust manifold and catalytic converter assemblies, together with the factory rear exhaust system, to provide a high-flow exhaust arrangement from the cylinder heads to the exhaust outlets.

Unlike a conventional rear silencer upgrade, the Competition Package addresses both the exhaust gas collection and final exhaust delivery stages.

The Competition Headers incorporate carefully designed runners, smooth-radius tubing, port-matched flanges and optimised collectors to improve exhaust gas movement away from the engine.

These headers eliminate the original catalytic converters, reducing exhaust restriction and creating a freer-flowing exhaust path.

The accompanying Valved Exhaust System uses mandrel-bent stainless steel tubing, specially developed silencers and electronically operated exhaust valves.

With the exhaust valves closed, gases pass through the sound-absorbing silencers, producing a controlled exhaust note intended to minimise unwanted cabin drone.

With the valves open, exhaust gases follow a more direct flow path through the X-pipe and rear exhaust, creating a noticeably louder and more aggressive flat-six soundtrack.

This selectable operation makes it possible to enjoy different exhaust characteristics depending on the driving situation.

The system is manufactured using T304L stainless steel, selected for its durability, corrosion resistance and suitability for demanding exhaust conditions.

The Competition Package is designed for direct bolt-on installation on compatible vehicles, with manufacturer-supplied fitting instructions.

SOUL Performance reports third-party dynamometer testing showing significant performance gains when the package is combined with appropriate ECU tuning.

The result is a complete performance exhaust upgrade intended to enhance engine response, maximise exhaust flow potential and deliver a distinctive motorsport-inspired sound.

Ideal for Porsche enthusiasts seeking increased performance, improved exhaust character and a comprehensive exhaust upgrade for track-focused applications.

What This Product Does:
The Competition Package replaces major sections of the original Porsche exhaust system to improve exhaust flow and provide selectable exhaust sound characteristics.

The system consists of two main components.

1. SOUL Performance Competition Headers

The Competition Headers collect exhaust gases as they leave the engine's cylinder heads.

They replace the original manifold and catalytic converter assemblies with stainless steel headers designed to reduce exhaust restriction.

Their functions include:

• Directing exhaust gases away from the cylinder heads.
• Providing smoother exhaust runner geometry.
• Supporting improved exhaust scavenging.
• Reducing restrictions associated with the original catalyst assemblies.
• Supporting improved throttle response.
• Increasing engine performance potential.
• Enhancing the natural exhaust sound of the 3.8L flat-six engine.
• Maintaining the correct mounting arrangement for the compatible engine.

The headers use port-matched flanges, smooth-radius primary runners and optimised collectors to support efficient gas flow.

2. SOUL Performance Valved Exhaust System

The Valved Exhaust System receives exhaust gases from the headers and directs them through the rear exhaust.

It incorporates electronically operated valves that provide different sound and flow characteristics.

Its functions include:

• Directing exhaust gases towards the rear outlets.
• Providing selectable exhaust sound modes.
• Reducing unwanted drone when the valves are closed.
• Producing a more aggressive sound when the valves are open.
• Supporting efficient flow through the rear exhaust.
• Maintaining compatibility with the appropriate factory valve-control system.
• Providing a durable stainless steel silencer arrangement.
• Enhancing the vehicle's rear appearance through custom exhaust tips.

 


Why Upgrading Matters:
The SOUL Performance Competition Package provides a comprehensive exhaust upgrade for drivers seeking increased performance and a more engaging engine sound.

Improved Exhaust Flow

• The Competition Headers remove the original catalytic converters and use optimised exhaust runners and collectors.
• This reduces restrictions in the exhaust path and supports improved engine breathing.

Increased Performance Potential

SOUL Performance reports third-party testing on a Dyno Dynamics dynamometer.

The manufacturer states that testing produced:

• Approximately 40 wheel horsepower improvement in a tuned configuration.
• Approximately 20 wheel horsepower incremental improvement attributed to the Competition Headers after the ECU tune had been applied.

These gains relate to the tested vehicle and configuration.

Results will vary according to engine condition, ECU calibration and other modifications.

Improved Throttle Response

• The freer-flowing exhaust arrangement is intended to improve the engine's response to accelerator input.
• This can make the naturally aspirated flat-six feel more responsive during acceleration, particularly at higher engine speeds.

Enhanced Flat-Six Exhaust Sound

• The package is designed to reveal more of the engine's natural exhaust character.
• The Competition Headers and Valved Exhaust System work together to create a distinctive sound, particularly when the valves are open.

Selectable Exhaust Characteristics

• Unlike a permanently unrestricted rear exhaust, the valved system allows the driver to select between different sound modes.
• This offers additional flexibility for owners who use their vehicles in different driving environments.

Durable Stainless Steel Construction

• The headers and rear exhaust use T304L stainless steel.
• The construction is designed to withstand repeated heating and cooling cycles, exhaust vibration and demanding driving conditions.

Complete Exhaust Upgrade

• The package includes both Competition Headers and the Valved Exhaust System.
• This provides an integrated aftermarket solution rather than requiring separate component selection.

Motorsport-Focused Performance

• The Competition Package is intended for drivers seeking a performance-oriented exhaust setup.
• Its catalyst-free construction and high-flow design make it particularly relevant to off-road and motorsport applications.

Manufacturer Warranty

• SOUL Performance offers a lifetime warranty for its exhaust components, subject to the manufacturer's published terms and conditions.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

POR.GT4.COPKG.SWT

The product you are viewing cross references to these numbers

SOUL Competition Exhaust Package, Signature Satin Tips (Slash Cut Single Wall)

The SOUL Performance Competition Package is a complete, high-performance exhaust upgrade designed specifically for Porsche 987.1 Boxster and Cayman models from 2005 to 2008.

Fits:

• Porsche Boxster 987 2.7L 2005-08/08
• Porsche Boxster 987 S 3.2/3.4L 2005-08/08
• Porsche Cayman 2.7L 987C 2006-08
• Porsche Cayman S 3.4L 987C 2005-08  

Exhaust Package Includes:

• Performance Exhaust System
• Competition Headers

Developed for Porsche's naturally aspirated flat-six engines, this competition-focused package combines SOUL Performance Competition Headers with its non-valved Performance Exhaust System, providing a comprehensive upgrade from the cylinder-head exhaust outlets through to the rear tailpipes.

The package is designed to improve exhaust gas flow, reduce unnecessary restrictions, enhance engine responsiveness and produce a more powerful, distinctive flat-six soundtrack.

Unlike the SOUL Street Package, which incorporates high-flow catalytic converters, the Competition Package uses catalyst-free Competition Headers. The accompanying rear exhaust also removes the original secondary catalytic converters.

The result is a freer-flowing exhaust system developed for performance-oriented and motorsport applications.

What This Product Does:
The SOUL Performance Competition Package collects combustion gases leaving the engine and directs them through a less restrictive exhaust system towards the rear outlets.

Its two principal components work together to influence exhaust flow, sound and engine response.

1. Improves Exhaust Gas Flow

The Competition Headers use long primary runners, smooth bends and optimised collectors to reduce unnecessary flow restrictions.

The rear exhaust continues this arrangement with mandrel-bent tubing and freer-flowing silencers.

2. Removes Factory Catalytic Converters

The Competition Headers replace the factory primary catalytic converter assemblies.

The Performance Exhaust System removes the original secondary catalytic converters.

This creates a catalyst-free exhaust configuration designed for legally permitted motorsport applications.

3. Supports Exhaust Scavenging

The shape of the header runners and collectors influences the movement of exhaust pressure pulses.

Efficient exhaust scavenging can help the engine expel combustion gases and support cylinder filling during subsequent combustion cycles.

4. Enhances Engine Responsiveness

Reduced exhaust restriction may help the naturally aspirated engine respond more readily to accelerator input, especially during acceleration and higher-load operation.

Actual results depend on the engine's condition and complete vehicle configuration.

5. Produces an Aggressive Flat-Six Sound

The Competition Headers and performance rear silencers create a louder, fuller exhaust note than the original Porsche system.

The system is designed to emphasise the characteristic sound of the flat-six engine.

6. Controls Unwanted Resonance

Although the package is significantly more aggressive than the original exhaust, its rear silencers are designed to minimise unwanted drone.

However, the catalyst-free configuration may be noticeably louder than a catted sports exhaust, and a completely drone-free result is not guaranteed.

7. Reduces Exhaust Weight

Replacing the factory exhaust components with stainless steel performance headers and a lighter rear exhaust can reduce overall exhaust-system weight.

SOUL reports an approximate 15 lb (6.8 kg) saving for the Performance Exhaust System alone. A verified complete-package weight saving has not been established.

8. Provides Durable Construction

T304L stainless steel, strengthened silencer casings and reinforced mounting components are designed to withstand repeated thermal cycling and vibration.

Why Upgrading Matters:

1. Improved Exhaust Efficiency

The complete package is designed to reduce unnecessary restrictions throughout the exhaust system.

This can support more efficient gas movement and improved engine breathing.

2. Increased Performance Potential

By replacing the original restrictive manifold and catalyst assemblies, the system offers increased performance potential for the naturally aspirated flat-six engine.

SOUL's reported Dynojet figures demonstrate the output of its tested Cayman S, but they do not establish a guaranteed horsepower or torque increase.

3. Enhanced Throttle Response

The freer-flowing exhaust configuration may help the engine respond more readily during acceleration.

4. Stronger Flat-Six Exhaust Sound

The package provides a significantly more aggressive exhaust note than the original system.

Its characteristic sound is particularly noticeable during hard acceleration and high-RPM driving.

5. Comprehensive Exhaust Upgrade

Unlike replacing only the rear silencers, the Competition Package upgrades the exhaust manifolds and rear exhaust together.

The two components are designed by the same manufacturer to work as an integrated system.

6. Reduced Weight

The lightweight rear exhaust offers an approximately 15 lb saving over the factory rear assembly, according to SOUL.

Reducing unnecessary vehicle weight may be beneficial for track-focused applications.

7. Durable Stainless Steel Construction

The T304L stainless steel components provide corrosion resistance and durability under high operating temperatures.

8. Reinforced Rear Silencers

SOUL uses strengthened silencer casings and mounting components to help withstand vibration and thermal stress.

9. Reduced Mechanical Complexity

The non-valved exhaust does not require vacuum actuators, electronic controllers or switching mechanisms.

This provides a simpler exhaust arrangement than a selectable valved system.

10. Motorsport-Focused Design

The catalyst-free construction is intended for legally permitted off-road and motorsport use.

The SOUL Competition Headers, manufacturer reference POR.9871.COH, were previously approved as an alternative to standard headers under the 2020 PCA Spec Cayman class rules. Current eligibility must be checked against the applicable competition regulations.

11. Customisable Rear Appearance

The available exhaust tip styles and finishes allow owners to personalise the appearance of their Boxster or Cayman.

12. Manufacturer Warranty

SOUL Performance provides a lifetime warranty on eligible exhaust components, subject to its terms and conditions.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

POR.9871.COPKG.SLT

The product you are viewing cross references to these numbers

SOUL Competition Exhaust Package, Signature Satin Tips (Straight Cut Single Wall)

The SOUL Performance Competition Package is a complete, high-performance exhaust upgrade designed specifically for Porsche 987.1 Boxster and Cayman models from 2005 to 2008.

Fits:

• Porsche Boxster 987 2.7L 2005-08/08
• Porsche Boxster 987 S 3.2/3.4L 2005-08/08
• Porsche Cayman 2.7L 987C 2006-08
• Porsche Cayman S 3.4L 987C 2005-08  

Exhaust Package Includes:

• Performance Exhaust System
• Competition Headers

Developed for Porsche's naturally aspirated flat-six engines, this competition-focused package combines SOUL Performance Competition Headers with its non-valved Performance Exhaust System, providing a comprehensive upgrade from the cylinder-head exhaust outlets through to the rear tailpipes.

The package is designed to improve exhaust gas flow, reduce unnecessary restrictions, enhance engine responsiveness and produce a more powerful, distinctive flat-six soundtrack.

Unlike the SOUL Street Package, which incorporates high-flow catalytic converters, the Competition Package uses catalyst-free Competition Headers. The accompanying rear exhaust also removes the original secondary catalytic converters.

The result is a freer-flowing exhaust system developed for performance-oriented and motorsport applications.

What This Product Does:
The SOUL Performance Competition Package collects combustion gases leaving the engine and directs them through a less restrictive exhaust system towards the rear outlets.

Its two principal components work together to influence exhaust flow, sound and engine response.

1. Improves Exhaust Gas Flow

The Competition Headers use long primary runners, smooth bends and optimised collectors to reduce unnecessary flow restrictions.

The rear exhaust continues this arrangement with mandrel-bent tubing and freer-flowing silencers.

2. Removes Factory Catalytic Converters

The Competition Headers replace the factory primary catalytic converter assemblies.

The Performance Exhaust System removes the original secondary catalytic converters.

This creates a catalyst-free exhaust configuration designed for legally permitted motorsport applications.

3. Supports Exhaust Scavenging

The shape of the header runners and collectors influences the movement of exhaust pressure pulses.

Efficient exhaust scavenging can help the engine expel combustion gases and support cylinder filling during subsequent combustion cycles.

4. Enhances Engine Responsiveness

Reduced exhaust restriction may help the naturally aspirated engine respond more readily to accelerator input, especially during acceleration and higher-load operation.

Actual results depend on the engine's condition and complete vehicle configuration.

5. Produces an Aggressive Flat-Six Sound

The Competition Headers and performance rear silencers create a louder, fuller exhaust note than the original Porsche system.

The system is designed to emphasise the characteristic sound of the flat-six engine.

6. Controls Unwanted Resonance

Although the package is significantly more aggressive than the original exhaust, its rear silencers are designed to minimise unwanted drone.

However, the catalyst-free configuration may be noticeably louder than a catted sports exhaust, and a completely drone-free result is not guaranteed.

7. Reduces Exhaust Weight

Replacing the factory exhaust components with stainless steel performance headers and a lighter rear exhaust can reduce overall exhaust-system weight.

SOUL reports an approximate 15 lb (6.8 kg) saving for the Performance Exhaust System alone. A verified complete-package weight saving has not been established.

8. Provides Durable Construction

T304L stainless steel, strengthened silencer casings and reinforced mounting components are designed to withstand repeated thermal cycling and vibration.

Why Upgrading Matters:

1. Improved Exhaust Efficiency

The complete package is designed to reduce unnecessary restrictions throughout the exhaust system.

This can support more efficient gas movement and improved engine breathing.

2. Increased Performance Potential

By replacing the original restrictive manifold and catalyst assemblies, the system offers increased performance potential for the naturally aspirated flat-six engine.

SOUL's reported Dynojet figures demonstrate the output of its tested Cayman S, but they do not establish a guaranteed horsepower or torque increase.

3. Enhanced Throttle Response

The freer-flowing exhaust configuration may help the engine respond more readily during acceleration.

4. Stronger Flat-Six Exhaust Sound

The package provides a significantly more aggressive exhaust note than the original system.

Its characteristic sound is particularly noticeable during hard acceleration and high-RPM driving.

5. Comprehensive Exhaust Upgrade

Unlike replacing only the rear silencers, the Competition Package upgrades the exhaust manifolds and rear exhaust together.

The two components are designed by the same manufacturer to work as an integrated system.

6. Reduced Weight

The lightweight rear exhaust offers an approximately 15 lb saving over the factory rear assembly, according to SOUL.

Reducing unnecessary vehicle weight may be beneficial for track-focused applications.

7. Durable Stainless Steel Construction

The T304L stainless steel components provide corrosion resistance and durability under high operating temperatures.

8. Reinforced Rear Silencers

SOUL uses strengthened silencer casings and mounting components to help withstand vibration and thermal stress.

9. Reduced Mechanical Complexity

The non-valved exhaust does not require vacuum actuators, electronic controllers or switching mechanisms.

This provides a simpler exhaust arrangement than a selectable valved system.

10. Motorsport-Focused Design

The catalyst-free construction is intended for legally permitted off-road and motorsport use.

The SOUL Competition Headers, manufacturer reference POR.9871.COH, were previously approved as an alternative to standard headers under the 2020 PCA Spec Cayman class rules. Current eligibility must be checked against the applicable competition regulations.

11. Customisable Rear Appearance

The available exhaust tip styles and finishes allow owners to personalise the appearance of their Boxster or Cayman.

12. Manufacturer Warranty

SOUL Performance provides a lifetime warranty on eligible exhaust components, subject to its terms and conditions.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

POR.9871.COPKG.SWT

The product you are viewing cross references to these numbers

SOUL Competition Exhaust Package, Signature Satin Tips (Slash Cut Single Wall)

The SOUL Performance Competition Package is a premium aftermarket performance exhaust upgrade designed for Porsche 987.2 Boxster and Cayman models manufactured between 2009 and 2012.

Fits:

• Porsche Boxster 987 MKII 2.9L 2009-12
• Porsche Boxster S 987 MKII 3.4L 2009-12
• Porsche Cayman 2.9L 987C MKII 2009-12
• Porsche Cayman S / R 3.4L 987C MKII 2009-12  

Exhaust Package Includes:

• Valved Exhaust System
• Competition Headers

Developed for Porsche's naturally aspirated 2.9-litre and 3.4-litre flat-six engines, this complete exhaust package combines SOUL Competition Headers with the manufacturer's Valved Exhaust System.

The package replaces the original exhaust manifold and catalytic converter assemblies, together with the factory rear exhaust, to provide a high-flow stainless steel exhaust arrangement.

Unlike the SOUL Street Package, which incorporates high-flow catalytic converters, the Competition Package uses catalyst-free exhaust headers. This reduces exhaust restriction and creates a more direct path for gases leaving the engine.

The Competition Headers feature 2-inch primary runners, port-matched mounting flanges, smooth-radius tubing and optimised exhaust collectors.

These design features are intended to improve exhaust scavenging, reduce unnecessary turbulence and enhance the engine's responsiveness.

The accompanying SOUL Valved Exhaust System uses mandrel-bent T304L stainless steel tubing, reinforced performance silencers, vacuum-operated exhaust valves and an X-pipe outlet arrangement.

The valved design provides two distinct exhaust sound characteristics.

With the valves closed, exhaust gases pass through specially developed sound-absorbing silencers, producing a deeper and more controlled exhaust tone. This arrangement is designed to minimise unwanted cabin drone during steady driving.

With the valves open, the exhaust gases follow a more direct route, producing a louder, more aggressive flat-six soundtrack.

The system is designed to suit vehicles with or without factory Porsche Sport Exhaust (PSE). The SOUL valve controller supplied with the valved exhaust allows selectable operation on compatible non-PSE vehicles and can provide manual override functionality on appropriately equipped PSE vehicles.

Manufactured from corrosion-resistant stainless steel, the package is engineered to withstand repeated thermal cycling, exhaust vibration and demanding performance driving.

SOUL Performance reports dynamometer testing on a 987.2 Cayman S equipped with PDK transmission, achieving a maximum improvement of 9 wheel horsepower and 10 lb-ft of torque at approximately 4,100 RPM.

The manufacturer has also track-tested the combination on its Project Cayman R.

The package is designed for direct bolt-on installation, with the components checked in fitting fixtures before dispatch.

Backed by the manufacturer's lifetime warranty, subject to its terms, the SOUL Competition Package is intended for Porsche owners seeking improved exhaust flow, a more engaging engine response and an aggressive, selectable exhaust soundtrack.

What This Product Does:
The Competition Package replaces major sections of the original exhaust system to improve the movement of combustion gases and allow the driver to select different exhaust sound characteristics.

The package consists of two principal components.

1. SOUL Performance Competition Headers

The Competition Headers collect exhaust gases as they leave the cylinder heads.

They replace the original exhaust manifolds and catalytic converter assemblies with stainless steel headers designed to reduce exhaust restriction.

Their main functions include:

• Collecting exhaust gases: Direct spent combustion gases away from the engine's cylinder heads.
  
• Improving exhaust flow: Use smooth-radius pipework and optimised collectors to reduce unnecessary restrictions.
  
• Supporting exhaust scavenging: Encourage efficient movement of exhaust pulses through the primary runners.
  
• Reducing exhaust backpressure: Remove the factory catalytic converters from the primary exhaust path.
  
• Supporting throttle response: Help the engine respond more efficiently to accelerator input.
  
• Increasing performance potential: Provide a freer-flowing exhaust arrangement for the naturally aspirated flat-six.
  
• Enhancing exhaust sound: Allow more of the engine's original exhaust character to pass into the rear system.
  
• Reducing weight: Replace the heavier factory manifold and catalyst assemblies with stainless steel performance headers.

The 2-inch primary runners and optimised collectors are designed for the characteristics of the 987.2 engine family.

2. SOUL Performance Valved Exhaust System

The Valved Exhaust System receives gases from the headers and directs them towards the rear exhaust outlets.

Its main functions include:

• Providing selectable quiet and aggressive exhaust sound modes.
• Reducing unwanted resonance with the valves closed.
• Producing a louder exhaust note with the valves open.
• Supporting efficient exhaust flow through mandrel-bent pipework.
• Providing an X-pipe outlet arrangement.
• Maintaining compatibility with the relevant PSE or supplied valve-control system.
• Supporting secure exhaust mounting through reinforced components.
• Enhancing the vehicle's rear appearance with premium exhaust tips.

 
Exhaust Sound Characteristics:

Valves Closed – Controlled Exhaust Tone

With the valves closed, exhaust gases pass through the SOUL performance silencers.

These contain sound-absorbing materials designed to reduce low-frequency resonance and control exhaust volume.

Benefits include:

• A deeper, more restrained flat-six exhaust note.
• Reduced cabin drone compared with open-valve operation.
• A more controlled sound during steady driving.
• Greater flexibility than a permanently unrestricted exhaust.

Valves Open – Motorsport-Inspired Sound

With the exhaust valves open, gases follow a more direct route through the performance exhaust.

This produces a much stronger exhaust note, particularly during acceleration and high-RPM operation.

Drivers may notice:

• A louder, more aggressive flat-six soundtrack.
• Greater sound intensity during acceleration.
• A more pronounced exhaust note during downshifts.
• Stronger engine character at higher RPM.
• A distinctive motorsport-inspired tone.

The final sound depends on engine specification, valve operation and driving conditions.

Track Noise Note: The system may exceed the sound restrictions imposed by some circuits and track-day organisers. Actual noise levels should be measured on the completed vehicle.

Why Upgrading Matters:

Improved Exhaust Flow

The Competition Headers use smooth-radius runners, port-matched flanges and optimised collectors.

By removing the factory catalytic converters, the system reduces exhaust restriction and supports more efficient exhaust gas movement.

Increased Performance Potential

SOUL Performance reports Dynojet testing on its Cayman S with PDK transmission.

The manufacturer recorded maximum gains of:

9 wheel horsepower. 10 lb-ft of torque.

These improvements were recorded at approximately 4,100 RPM in the tested configuration.

Results depend on the engine, vehicle condition, exhaust configuration and testing conditions. They are not guaranteed gains for every Boxster or Cayman.

Sharper Throttle Response

The freer-flowing exhaust arrangement is designed to support quicker and more consistent engine response during acceleration.

Enhanced Flat-Six Exhaust Sound

The Competition Headers and Valved Exhaust System work together to produce a stronger and more distinctive exhaust note.

The catalyst-free construction increases the amount of engine sound passing through the exhaust.

Selectable Exhaust Characteristics

Unlike a fixed competition exhaust, the SOUL valved arrangement allows the driver to select between more controlled and more aggressive exhaust sound modes.

Weight Reduction

SOUL reports that the Competition Headers weigh approximately 19 lb, compared with 26 lb for the factory manifold and catalyst assemblies, excluding hardware.

This represents a manufacturer-reported saving of approximately 7 lb (3.2 kg) for the headers.

The separately listed Valved Exhaust System also offers weight-saving potential compared with the original rear exhaust.

These component-specific figures should not be presented as a verified total package weight saving without confirmation.

Durable Stainless Steel Construction

T304L stainless steel offers corrosion resistance and durability under repeated thermal expansion and contraction.

The exhaust also incorporates reinforced silencer casings and mounting components.

Compatibility with Factory PSE

The Valved Exhaust System is designed to operate with the appropriate factory Porsche Sport Exhaust valve controls.

Valve Control for Non-PSE Vehicles

The supplied SOUL controller allows compatible vehicles without factory PSE to gain selectable exhaust valve operation.

Premium Exhaust Tip Options

The package offers a choice of stainless steel and titanium exhaust tips in different styles and finishes.

Complete Integrated Upgrade

Combining the Competition Headers and Valved Exhaust System provides an integrated exhaust solution developed by the same manufacturer.

Manufacturer Lifetime Warranty

SOUL Performance provides a lifetime warranty for its exhaust components, subject to the published warranty conditions.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

POR.9872.COPKG.SLT

The product you are viewing cross references to these numbers

SOUL Competition Exhaust Package, Signature Satin Tips (Straight Cut Single Wall)

The SOUL Performance Competition Package is a premium aftermarket performance exhaust upgrade designed for Porsche 987.2 Boxster and Cayman models manufactured between 2009 and 2012.

Fits:

• Porsche Boxster 987 MKII 2.9L 2009-12
• Porsche Boxster S 987 MKII 3.4L 2009-12
• Porsche Cayman 2.9L 987C MKII 2009-12
• Porsche Cayman S / R 3.4L 987C MKII 2009-12  

Exhaust Package Includes:

• Valved Exhaust System
• Competition Headers

Developed for Porsche's naturally aspirated 2.9-litre and 3.4-litre flat-six engines, this complete exhaust package combines SOUL Competition Headers with the manufacturer's Valved Exhaust System.

The package replaces the original exhaust manifold and catalytic converter assemblies, together with the factory rear exhaust, to provide a high-flow stainless steel exhaust arrangement.

Unlike the SOUL Street Package, which incorporates high-flow catalytic converters, the Competition Package uses catalyst-free exhaust headers. This reduces exhaust restriction and creates a more direct path for gases leaving the engine.

The Competition Headers feature 2-inch primary runners, port-matched mounting flanges, smooth-radius tubing and optimised exhaust collectors.

These design features are intended to improve exhaust scavenging, reduce unnecessary turbulence and enhance the engine's responsiveness.

The accompanying SOUL Valved Exhaust System uses mandrel-bent T304L stainless steel tubing, reinforced performance silencers, vacuum-operated exhaust valves and an X-pipe outlet arrangement.

The valved design provides two distinct exhaust sound characteristics.

With the valves closed, exhaust gases pass through specially developed sound-absorbing silencers, producing a deeper and more controlled exhaust tone. This arrangement is designed to minimise unwanted cabin drone during steady driving.

With the valves open, the exhaust gases follow a more direct route, producing a louder, more aggressive flat-six soundtrack.

The system is designed to suit vehicles with or without factory Porsche Sport Exhaust (PSE). The SOUL valve controller supplied with the valved exhaust allows selectable operation on compatible non-PSE vehicles and can provide manual override functionality on appropriately equipped PSE vehicles.

Manufactured from corrosion-resistant stainless steel, the package is engineered to withstand repeated thermal cycling, exhaust vibration and demanding performance driving.

SOUL Performance reports dynamometer testing on a 987.2 Cayman S equipped with PDK transmission, achieving a maximum improvement of 9 wheel horsepower and 10 lb-ft of torque at approximately 4,100 RPM.

The manufacturer has also track-tested the combination on its Project Cayman R.

The package is designed for direct bolt-on installation, with the components checked in fitting fixtures before dispatch.

Backed by the manufacturer's lifetime warranty, subject to its terms, the SOUL Competition Package is intended for Porsche owners seeking improved exhaust flow, a more engaging engine response and an aggressive, selectable exhaust soundtrack.

What This Product Does:
The Competition Package replaces major sections of the original exhaust system to improve the movement of combustion gases and allow the driver to select different exhaust sound characteristics.

The package consists of two principal components.

1. SOUL Performance Competition Headers

The Competition Headers collect exhaust gases as they leave the cylinder heads.

They replace the original exhaust manifolds and catalytic converter assemblies with stainless steel headers designed to reduce exhaust restriction.

Their main functions include:

• Collecting exhaust gases: Direct spent combustion gases away from the engine's cylinder heads.
  
• Improving exhaust flow: Use smooth-radius pipework and optimised collectors to reduce unnecessary restrictions.
  
• Supporting exhaust scavenging: Encourage efficient movement of exhaust pulses through the primary runners.
  
• Reducing exhaust backpressure: Remove the factory catalytic converters from the primary exhaust path.
  
• Supporting throttle response: Help the engine respond more efficiently to accelerator input.
  
• Increasing performance potential: Provide a freer-flowing exhaust arrangement for the naturally aspirated flat-six.
  
• Enhancing exhaust sound: Allow more of the engine's original exhaust character to pass into the rear system.
  
• Reducing weight: Replace the heavier factory manifold and catalyst assemblies with stainless steel performance headers.

The 2-inch primary runners and optimised collectors are designed for the characteristics of the 987.2 engine family.

2. SOUL Performance Valved Exhaust System

The Valved Exhaust System receives gases from the headers and directs them towards the rear exhaust outlets.

Its main functions include:

• Providing selectable quiet and aggressive exhaust sound modes.
• Reducing unwanted resonance with the valves closed.
• Producing a louder exhaust note with the valves open.
• Supporting efficient exhaust flow through mandrel-bent pipework.
• Providing an X-pipe outlet arrangement.
• Maintaining compatibility with the relevant PSE or supplied valve-control system.
• Supporting secure exhaust mounting through reinforced components.
• Enhancing the vehicle's rear appearance with premium exhaust tips.

 
Exhaust Sound Characteristics:

Valves Closed – Controlled Exhaust Tone

With the valves closed, exhaust gases pass through the SOUL performance silencers.

These contain sound-absorbing materials designed to reduce low-frequency resonance and control exhaust volume.

Benefits include:

• A deeper, more restrained flat-six exhaust note.
• Reduced cabin drone compared with open-valve operation.
• A more controlled sound during steady driving.
• Greater flexibility than a permanently unrestricted exhaust.

Valves Open – Motorsport-Inspired Sound

With the exhaust valves open, gases follow a more direct route through the performance exhaust.

This produces a much stronger exhaust note, particularly during acceleration and high-RPM operation.

Drivers may notice:

• A louder, more aggressive flat-six soundtrack.
• Greater sound intensity during acceleration.
• A more pronounced exhaust note during downshifts.
• Stronger engine character at higher RPM.
• A distinctive motorsport-inspired tone.

The final sound depends on engine specification, valve operation and driving conditions.

Track Noise Note: The system may exceed the sound restrictions imposed by some circuits and track-day organisers. Actual noise levels should be measured on the completed vehicle.

Why Upgrading Matters:

Improved Exhaust Flow

The Competition Headers use smooth-radius runners, port-matched flanges and optimised collectors.

By removing the factory catalytic converters, the system reduces exhaust restriction and supports more efficient exhaust gas movement.

Increased Performance Potential

SOUL Performance reports Dynojet testing on its Cayman S with PDK transmission.

The manufacturer recorded maximum gains of:

9 wheel horsepower. 10 lb-ft of torque.

These improvements were recorded at approximately 4,100 RPM in the tested configuration.

Results depend on the engine, vehicle condition, exhaust configuration and testing conditions. They are not guaranteed gains for every Boxster or Cayman.

Sharper Throttle Response

The freer-flowing exhaust arrangement is designed to support quicker and more consistent engine response during acceleration.

Enhanced Flat-Six Exhaust Sound

The Competition Headers and Valved Exhaust System work together to produce a stronger and more distinctive exhaust note.

The catalyst-free construction increases the amount of engine sound passing through the exhaust.

Selectable Exhaust Characteristics

Unlike a fixed competition exhaust, the SOUL valved arrangement allows the driver to select between more controlled and more aggressive exhaust sound modes.

Weight Reduction

SOUL reports that the Competition Headers weigh approximately 19 lb, compared with 26 lb for the factory manifold and catalyst assemblies, excluding hardware.

This represents a manufacturer-reported saving of approximately 7 lb (3.2 kg) for the headers.

The separately listed Valved Exhaust System also offers weight-saving potential compared with the original rear exhaust.

These component-specific figures should not be presented as a verified total package weight saving without confirmation.

Durable Stainless Steel Construction

T304L stainless steel offers corrosion resistance and durability under repeated thermal expansion and contraction.

The exhaust also incorporates reinforced silencer casings and mounting components.

Compatibility with Factory PSE

The Valved Exhaust System is designed to operate with the appropriate factory Porsche Sport Exhaust valve controls.

Valve Control for Non-PSE Vehicles

The supplied SOUL controller allows compatible vehicles without factory PSE to gain selectable exhaust valve operation.

Premium Exhaust Tip Options

The package offers a choice of stainless steel and titanium exhaust tips in different styles and finishes.

Complete Integrated Upgrade

Combining the Competition Headers and Valved Exhaust System provides an integrated exhaust solution developed by the same manufacturer.

Manufacturer Lifetime Warranty

SOUL Performance provides a lifetime warranty for its exhaust components, subject to the published warranty conditions.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

POR.9872.COPKG.SWT

The product you are viewing cross references to these numbers

SOUL Competition Exhaust Package, Titanium Tips (Slash Cut Single Wall).

The SOUL Performance Competition Package is a premium aftermarket exhaust upgrade developed specifically for the Porsche 981 Cayman GT4, Boxster Spyder and GT4 Clubsport models manufactured between 2015 and 2016.

Fits:

• Porsche Boxster 981 Spyder 3.8L 2016
• Porsche Cayman GT4 3.8L 2015-16  

Kit Includes:

• Valved Exhaust System
• Competition Headers

Designed for the naturally aspirated 3.8L flat-six engine, this comprehensive performance package combines SOUL Performance Competition Headers with its electronically controlled Valved Exhaust System.

The package replaces the original exhaust manifold and catalytic converter assemblies, together with the factory rear exhaust system, to provide a high-flow exhaust arrangement from the cylinder heads to the exhaust outlets.

Unlike a conventional rear silencer upgrade, the Competition Package addresses both the exhaust gas collection and final exhaust delivery stages.

The Competition Headers incorporate carefully designed runners, smooth-radius tubing, port-matched flanges and optimised collectors to improve exhaust gas movement away from the engine.

These headers eliminate the original catalytic converters, reducing exhaust restriction and creating a freer-flowing exhaust path.

The accompanying Valved Exhaust System uses mandrel-bent stainless steel tubing, specially developed silencers and electronically operated exhaust valves.

With the exhaust valves closed, gases pass through the sound-absorbing silencers, producing a controlled exhaust note intended to minimise unwanted cabin drone.

With the valves open, exhaust gases follow a more direct flow path through the X-pipe and rear exhaust, creating a noticeably louder and more aggressive flat-six soundtrack.

This selectable operation makes it possible to enjoy different exhaust characteristics depending on the driving situation.

The system is manufactured using T304L stainless steel, selected for its durability, corrosion resistance and suitability for demanding exhaust conditions.

The Competition Package is designed for direct bolt-on installation on compatible vehicles, with manufacturer-supplied fitting instructions.

SOUL Performance reports third-party dynamometer testing showing significant performance gains when the package is combined with appropriate ECU tuning.

The result is a complete performance exhaust upgrade intended to enhance engine response, maximise exhaust flow potential and deliver a distinctive motorsport-inspired sound.

Ideal for Porsche enthusiasts seeking increased performance, improved exhaust character and a comprehensive exhaust upgrade for track-focused applications.

What This Product Does:
The Competition Package replaces major sections of the original Porsche exhaust system to improve exhaust flow and provide selectable exhaust sound characteristics.

The system consists of two main components.

1. SOUL Performance Competition Headers

The Competition Headers collect exhaust gases as they leave the engine's cylinder heads.

They replace the original manifold and catalytic converter assemblies with stainless steel headers designed to reduce exhaust restriction.

Their functions include:

• Directing exhaust gases away from the cylinder heads.
• Providing smoother exhaust runner geometry.
• Supporting improved exhaust scavenging.
• Reducing restrictions associated with the original catalyst assemblies.
• Supporting improved throttle response.
• Increasing engine performance potential.
• Enhancing the natural exhaust sound of the 3.8L flat-six engine.
• Maintaining the correct mounting arrangement for the compatible engine.

The headers use port-matched flanges, smooth-radius primary runners and optimised collectors to support efficient gas flow.

2. SOUL Performance Valved Exhaust System

The Valved Exhaust System receives exhaust gases from the headers and directs them through the rear exhaust.

It incorporates electronically operated valves that provide different sound and flow characteristics.

Its functions include:

• Directing exhaust gases towards the rear outlets.
• Providing selectable exhaust sound modes.
• Reducing unwanted drone when the valves are closed.
• Producing a more aggressive sound when the valves are open.
• Supporting efficient flow through the rear exhaust.
• Maintaining compatibility with the appropriate factory valve-control system.
• Providing a durable stainless steel silencer arrangement.
• Enhancing the vehicle's rear appearance through custom exhaust tips.

 


Why Upgrading Matters:
The SOUL Performance Competition Package provides a comprehensive exhaust upgrade for drivers seeking increased performance and a more engaging engine sound.

Improved Exhaust Flow

• The Competition Headers remove the original catalytic converters and use optimised exhaust runners and collectors.
• This reduces restrictions in the exhaust path and supports improved engine breathing.

Increased Performance Potential

SOUL Performance reports third-party testing on a Dyno Dynamics dynamometer.

The manufacturer states that testing produced:

• Approximately 40 wheel horsepower improvement in a tuned configuration.
• Approximately 20 wheel horsepower incremental improvement attributed to the Competition Headers after the ECU tune had been applied.

These gains relate to the tested vehicle and configuration.

Results will vary according to engine condition, ECU calibration and other modifications.

Improved Throttle Response

• The freer-flowing exhaust arrangement is intended to improve the engine's response to accelerator input.
• This can make the naturally aspirated flat-six feel more responsive during acceleration, particularly at higher engine speeds.

Enhanced Flat-Six Exhaust Sound

• The package is designed to reveal more of the engine's natural exhaust character.
• The Competition Headers and Valved Exhaust System work together to create a distinctive sound, particularly when the valves are open.

Selectable Exhaust Characteristics

• Unlike a permanently unrestricted rear exhaust, the valved system allows the driver to select between different sound modes.
• This offers additional flexibility for owners who use their vehicles in different driving environments.

Durable Stainless Steel Construction

• The headers and rear exhaust use T304L stainless steel.
• The construction is designed to withstand repeated heating and cooling cycles, exhaust vibration and demanding driving conditions.

Complete Exhaust Upgrade

• The package includes both Competition Headers and the Valved Exhaust System.
• This provides an integrated aftermarket solution rather than requiring separate component selection.

Motorsport-Focused Performance

• The Competition Package is intended for drivers seeking a performance-oriented exhaust setup.
• Its catalyst-free construction and high-flow design make it particularly relevant to off-road and motorsport applications.

Manufacturer Warranty

• SOUL Performance offers a lifetime warranty for its exhaust components, subject to the manufacturer's published terms and conditions.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

POR.GT4.COPKG.SLTT

The product you are viewing cross references to these numbers

SOUL Competition Exhaust Package, Titanium Tips (Straight Cut Single Wall).

The SOUL Performance Competition Package is a premium aftermarket exhaust upgrade developed specifically for the Porsche 981 Cayman GT4, Boxster Spyder and GT4 Clubsport models manufactured between 2015 and 2016.

Fits:

• Porsche Boxster 981 Spyder 3.8L 2016
• Porsche Cayman GT4 3.8L 2015-16  

Kit Includes:

• Valved Exhaust System
• Competition Headers

Designed for the naturally aspirated 3.8L flat-six engine, this comprehensive performance package combines SOUL Performance Competition Headers with its electronically controlled Valved Exhaust System.

The package replaces the original exhaust manifold and catalytic converter assemblies, together with the factory rear exhaust system, to provide a high-flow exhaust arrangement from the cylinder heads to the exhaust outlets.

Unlike a conventional rear silencer upgrade, the Competition Package addresses both the exhaust gas collection and final exhaust delivery stages.

The Competition Headers incorporate carefully designed runners, smooth-radius tubing, port-matched flanges and optimised collectors to improve exhaust gas movement away from the engine.

These headers eliminate the original catalytic converters, reducing exhaust restriction and creating a freer-flowing exhaust path.

The accompanying Valved Exhaust System uses mandrel-bent stainless steel tubing, specially developed silencers and electronically operated exhaust valves.

With the exhaust valves closed, gases pass through the sound-absorbing silencers, producing a controlled exhaust note intended to minimise unwanted cabin drone.

With the valves open, exhaust gases follow a more direct flow path through the X-pipe and rear exhaust, creating a noticeably louder and more aggressive flat-six soundtrack.

This selectable operation makes it possible to enjoy different exhaust characteristics depending on the driving situation.

The system is manufactured using T304L stainless steel, selected for its durability, corrosion resistance and suitability for demanding exhaust conditions.

The Competition Package is designed for direct bolt-on installation on compatible vehicles, with manufacturer-supplied fitting instructions.

SOUL Performance reports third-party dynamometer testing showing significant performance gains when the package is combined with appropriate ECU tuning.

The result is a complete performance exhaust upgrade intended to enhance engine response, maximise exhaust flow potential and deliver a distinctive motorsport-inspired sound.

Ideal for Porsche enthusiasts seeking increased performance, improved exhaust character and a comprehensive exhaust upgrade for track-focused applications.

What This Product Does:
The Competition Package replaces major sections of the original Porsche exhaust system to improve exhaust flow and provide selectable exhaust sound characteristics.

The system consists of two main components.

1. SOUL Performance Competition Headers

The Competition Headers collect exhaust gases as they leave the engine's cylinder heads.

They replace the original manifold and catalytic converter assemblies with stainless steel headers designed to reduce exhaust restriction.

Their functions include:

• Directing exhaust gases away from the cylinder heads.
• Providing smoother exhaust runner geometry.
• Supporting improved exhaust scavenging.
• Reducing restrictions associated with the original catalyst assemblies.
• Supporting improved throttle response.
• Increasing engine performance potential.
• Enhancing the natural exhaust sound of the 3.8L flat-six engine.
• Maintaining the correct mounting arrangement for the compatible engine.

The headers use port-matched flanges, smooth-radius primary runners and optimised collectors to support efficient gas flow.

2. SOUL Performance Valved Exhaust System

The Valved Exhaust System receives exhaust gases from the headers and directs them through the rear exhaust.

It incorporates electronically operated valves that provide different sound and flow characteristics.

Its functions include:

• Directing exhaust gases towards the rear outlets.
• Providing selectable exhaust sound modes.
• Reducing unwanted drone when the valves are closed.
• Producing a more aggressive sound when the valves are open.
• Supporting efficient flow through the rear exhaust.
• Maintaining compatibility with the appropriate factory valve-control system.
• Providing a durable stainless steel silencer arrangement.
• Enhancing the vehicle's rear appearance through custom exhaust tips.

 


Why Upgrading Matters:
The SOUL Performance Competition Package provides a comprehensive exhaust upgrade for drivers seeking increased performance and a more engaging engine sound.

Improved Exhaust Flow

• The Competition Headers remove the original catalytic converters and use optimised exhaust runners and collectors.
• This reduces restrictions in the exhaust path and supports improved engine breathing.

Increased Performance Potential

SOUL Performance reports third-party testing on a Dyno Dynamics dynamometer.

The manufacturer states that testing produced:

• Approximately 40 wheel horsepower improvement in a tuned configuration.
• Approximately 20 wheel horsepower incremental improvement attributed to the Competition Headers after the ECU tune had been applied.

These gains relate to the tested vehicle and configuration.

Results will vary according to engine condition, ECU calibration and other modifications.

Improved Throttle Response

• The freer-flowing exhaust arrangement is intended to improve the engine's response to accelerator input.
• This can make the naturally aspirated flat-six feel more responsive during acceleration, particularly at higher engine speeds.

Enhanced Flat-Six Exhaust Sound

• The package is designed to reveal more of the engine's natural exhaust character.
• The Competition Headers and Valved Exhaust System work together to create a distinctive sound, particularly when the valves are open.

Selectable Exhaust Characteristics

• Unlike a permanently unrestricted rear exhaust, the valved system allows the driver to select between different sound modes.
• This offers additional flexibility for owners who use their vehicles in different driving environments.

Durable Stainless Steel Construction

• The headers and rear exhaust use T304L stainless steel.
• The construction is designed to withstand repeated heating and cooling cycles, exhaust vibration and demanding driving conditions.

Complete Exhaust Upgrade

• The package includes both Competition Headers and the Valved Exhaust System.
• This provides an integrated aftermarket solution rather than requiring separate component selection.

Motorsport-Focused Performance

• The Competition Package is intended for drivers seeking a performance-oriented exhaust setup.
• Its catalyst-free construction and high-flow design make it particularly relevant to off-road and motorsport applications.

Manufacturer Warranty

• SOUL Performance offers a lifetime warranty for its exhaust components, subject to the manufacturer's published terms and conditions.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

POR.GT4.COPKG.SWTT

The product you are viewing cross references to these numbers

SOUL Competition Exhaust Package, Titanium Tips (Straight Cut Single Wall)

The SOUL Performance Competition Package is a complete, high-performance exhaust upgrade designed specifically for Porsche 987.1 Boxster and Cayman models from 2005 to 2008.

Fits:

• Porsche Boxster 987 2.7L 2005-08/08
• Porsche Boxster 987 S 3.2/3.4L 2005-08/08
• Porsche Cayman 2.7L 987C 2006-08
• Porsche Cayman S 3.4L 987C 2005-08  

Exhaust Package Includes:

• Performance Exhaust System
• Competition Headers

Developed for Porsche's naturally aspirated flat-six engines, this competition-focused package combines SOUL Performance Competition Headers with its non-valved Performance Exhaust System, providing a comprehensive upgrade from the cylinder-head exhaust outlets through to the rear tailpipes.

The package is designed to improve exhaust gas flow, reduce unnecessary restrictions, enhance engine responsiveness and produce a more powerful, distinctive flat-six soundtrack.

Unlike the SOUL Street Package, which incorporates high-flow catalytic converters, the Competition Package uses catalyst-free Competition Headers. The accompanying rear exhaust also removes the original secondary catalytic converters.

The result is a freer-flowing exhaust system developed for performance-oriented and motorsport applications.

What This Product Does:
The SOUL Performance Competition Package collects combustion gases leaving the engine and directs them through a less restrictive exhaust system towards the rear outlets.

Its two principal components work together to influence exhaust flow, sound and engine response.

1. Improves Exhaust Gas Flow

The Competition Headers use long primary runners, smooth bends and optimised collectors to reduce unnecessary flow restrictions.

The rear exhaust continues this arrangement with mandrel-bent tubing and freer-flowing silencers.

2. Removes Factory Catalytic Converters

The Competition Headers replace the factory primary catalytic converter assemblies.

The Performance Exhaust System removes the original secondary catalytic converters.

This creates a catalyst-free exhaust configuration designed for legally permitted motorsport applications.

3. Supports Exhaust Scavenging

The shape of the header runners and collectors influences the movement of exhaust pressure pulses.

Efficient exhaust scavenging can help the engine expel combustion gases and support cylinder filling during subsequent combustion cycles.

4. Enhances Engine Responsiveness

Reduced exhaust restriction may help the naturally aspirated engine respond more readily to accelerator input, especially during acceleration and higher-load operation.

Actual results depend on the engine's condition and complete vehicle configuration.

5. Produces an Aggressive Flat-Six Sound

The Competition Headers and performance rear silencers create a louder, fuller exhaust note than the original Porsche system.

The system is designed to emphasise the characteristic sound of the flat-six engine.

6. Controls Unwanted Resonance

Although the package is significantly more aggressive than the original exhaust, its rear silencers are designed to minimise unwanted drone.

However, the catalyst-free configuration may be noticeably louder than a catted sports exhaust, and a completely drone-free result is not guaranteed.

7. Reduces Exhaust Weight

Replacing the factory exhaust components with stainless steel performance headers and a lighter rear exhaust can reduce overall exhaust-system weight.

SOUL reports an approximate 15 lb (6.8 kg) saving for the Performance Exhaust System alone. A verified complete-package weight saving has not been established.

8. Provides Durable Construction

T304L stainless steel, strengthened silencer casings and reinforced mounting components are designed to withstand repeated thermal cycling and vibration.

Why Upgrading Matters:

1. Improved Exhaust Efficiency

The complete package is designed to reduce unnecessary restrictions throughout the exhaust system.

This can support more efficient gas movement and improved engine breathing.

2. Increased Performance Potential

By replacing the original restrictive manifold and catalyst assemblies, the system offers increased performance potential for the naturally aspirated flat-six engine.

SOUL's reported Dynojet figures demonstrate the output of its tested Cayman S, but they do not establish a guaranteed horsepower or torque increase.

3. Enhanced Throttle Response

The freer-flowing exhaust configuration may help the engine respond more readily during acceleration.

4. Stronger Flat-Six Exhaust Sound

The package provides a significantly more aggressive exhaust note than the original system.

Its characteristic sound is particularly noticeable during hard acceleration and high-RPM driving.

5. Comprehensive Exhaust Upgrade

Unlike replacing only the rear silencers, the Competition Package upgrades the exhaust manifolds and rear exhaust together.

The two components are designed by the same manufacturer to work as an integrated system.

6. Reduced Weight

The lightweight rear exhaust offers an approximately 15 lb saving over the factory rear assembly, according to SOUL.

Reducing unnecessary vehicle weight may be beneficial for track-focused applications.

7. Durable Stainless Steel Construction

The T304L stainless steel components provide corrosion resistance and durability under high operating temperatures.

8. Reinforced Rear Silencers

SOUL uses strengthened silencer casings and mounting components to help withstand vibration and thermal stress.

9. Reduced Mechanical Complexity

The non-valved exhaust does not require vacuum actuators, electronic controllers or switching mechanisms.

This provides a simpler exhaust arrangement than a selectable valved system.

10. Motorsport-Focused Design

The catalyst-free construction is intended for legally permitted off-road and motorsport use.

The SOUL Competition Headers, manufacturer reference POR.9871.COH, were previously approved as an alternative to standard headers under the 2020 PCA Spec Cayman class rules. Current eligibility must be checked against the applicable competition regulations.

11. Customisable Rear Appearance

The available exhaust tip styles and finishes allow owners to personalise the appearance of their Boxster or Cayman.

12. Manufacturer Warranty

SOUL Performance provides a lifetime warranty on eligible exhaust components, subject to its terms and conditions.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

POR.9871.COPKG.SWTT

The product you are viewing cross references to these numbers

SOUL Competition Exhaust Package, Titanium Tips (Slash Cut Single Wall)

The SOUL Performance Competition Package is a premium aftermarket performance exhaust upgrade designed for Porsche 987.2 Boxster and Cayman models manufactured between 2009 and 2012.

Fits:

• Porsche Boxster 987 MKII 2.9L 2009-12
• Porsche Boxster S 987 MKII 3.4L 2009-12
• Porsche Cayman 2.9L 987C MKII 2009-12
• Porsche Cayman S / R 3.4L 987C MKII 2009-12  

Exhaust Package Includes:

• Valved Exhaust System
• Competition Headers

Developed for Porsche's naturally aspirated 2.9-litre and 3.4-litre flat-six engines, this complete exhaust package combines SOUL Competition Headers with the manufacturer's Valved Exhaust System.

The package replaces the original exhaust manifold and catalytic converter assemblies, together with the factory rear exhaust, to provide a high-flow stainless steel exhaust arrangement.

Unlike the SOUL Street Package, which incorporates high-flow catalytic converters, the Competition Package uses catalyst-free exhaust headers. This reduces exhaust restriction and creates a more direct path for gases leaving the engine.

The Competition Headers feature 2-inch primary runners, port-matched mounting flanges, smooth-radius tubing and optimised exhaust collectors.

These design features are intended to improve exhaust scavenging, reduce unnecessary turbulence and enhance the engine's responsiveness.

The accompanying SOUL Valved Exhaust System uses mandrel-bent T304L stainless steel tubing, reinforced performance silencers, vacuum-operated exhaust valves and an X-pipe outlet arrangement.

The valved design provides two distinct exhaust sound characteristics.

With the valves closed, exhaust gases pass through specially developed sound-absorbing silencers, producing a deeper and more controlled exhaust tone. This arrangement is designed to minimise unwanted cabin drone during steady driving.

With the valves open, the exhaust gases follow a more direct route, producing a louder, more aggressive flat-six soundtrack.

The system is designed to suit vehicles with or without factory Porsche Sport Exhaust (PSE). The SOUL valve controller supplied with the valved exhaust allows selectable operation on compatible non-PSE vehicles and can provide manual override functionality on appropriately equipped PSE vehicles.

Manufactured from corrosion-resistant stainless steel, the package is engineered to withstand repeated thermal cycling, exhaust vibration and demanding performance driving.

SOUL Performance reports dynamometer testing on a 987.2 Cayman S equipped with PDK transmission, achieving a maximum improvement of 9 wheel horsepower and 10 lb-ft of torque at approximately 4,100 RPM.

The manufacturer has also track-tested the combination on its Project Cayman R.

The package is designed for direct bolt-on installation, with the components checked in fitting fixtures before dispatch.

Backed by the manufacturer's lifetime warranty, subject to its terms, the SOUL Competition Package is intended for Porsche owners seeking improved exhaust flow, a more engaging engine response and an aggressive, selectable exhaust soundtrack.

What This Product Does:
The Competition Package replaces major sections of the original exhaust system to improve the movement of combustion gases and allow the driver to select different exhaust sound characteristics.

The package consists of two principal components.

1. SOUL Performance Competition Headers

The Competition Headers collect exhaust gases as they leave the cylinder heads.

They replace the original exhaust manifolds and catalytic converter assemblies with stainless steel headers designed to reduce exhaust restriction.

Their main functions include:

• Collecting exhaust gases: Direct spent combustion gases away from the engine's cylinder heads.
  
• Improving exhaust flow: Use smooth-radius pipework and optimised collectors to reduce unnecessary restrictions.
  
• Supporting exhaust scavenging: Encourage efficient movement of exhaust pulses through the primary runners.
  
• Reducing exhaust backpressure: Remove the factory catalytic converters from the primary exhaust path.
  
• Supporting throttle response: Help the engine respond more efficiently to accelerator input.
  
• Increasing performance potential: Provide a freer-flowing exhaust arrangement for the naturally aspirated flat-six.
  
• Enhancing exhaust sound: Allow more of the engine's original exhaust character to pass into the rear system.
  
• Reducing weight: Replace the heavier factory manifold and catalyst assemblies with stainless steel performance headers.

The 2-inch primary runners and optimised collectors are designed for the characteristics of the 987.2 engine family.

2. SOUL Performance Valved Exhaust System

The Valved Exhaust System receives gases from the headers and directs them towards the rear exhaust outlets.

Its main functions include:

• Providing selectable quiet and aggressive exhaust sound modes.
• Reducing unwanted resonance with the valves closed.
• Producing a louder exhaust note with the valves open.
• Supporting efficient exhaust flow through mandrel-bent pipework.
• Providing an X-pipe outlet arrangement.
• Maintaining compatibility with the relevant PSE or supplied valve-control system.
• Supporting secure exhaust mounting through reinforced components.
• Enhancing the vehicle's rear appearance with premium exhaust tips.

 
Exhaust Sound Characteristics:

Valves Closed – Controlled Exhaust Tone

With the valves closed, exhaust gases pass through the SOUL performance silencers.

These contain sound-absorbing materials designed to reduce low-frequency resonance and control exhaust volume.

Benefits include:

• A deeper, more restrained flat-six exhaust note.
• Reduced cabin drone compared with open-valve operation.
• A more controlled sound during steady driving.
• Greater flexibility than a permanently unrestricted exhaust.

Valves Open – Motorsport-Inspired Sound

With the exhaust valves open, gases follow a more direct route through the performance exhaust.

This produces a much stronger exhaust note, particularly during acceleration and high-RPM operation.

Drivers may notice:

• A louder, more aggressive flat-six soundtrack.
• Greater sound intensity during acceleration.
• A more pronounced exhaust note during downshifts.
• Stronger engine character at higher RPM.
• A distinctive motorsport-inspired tone.

The final sound depends on engine specification, valve operation and driving conditions.

Track Noise Note: The system may exceed the sound restrictions imposed by some circuits and track-day organisers. Actual noise levels should be measured on the completed vehicle.

Why Upgrading Matters:

Improved Exhaust Flow

The Competition Headers use smooth-radius runners, port-matched flanges and optimised collectors.

By removing the factory catalytic converters, the system reduces exhaust restriction and supports more efficient exhaust gas movement.

Increased Performance Potential

SOUL Performance reports Dynojet testing on its Cayman S with PDK transmission.

The manufacturer recorded maximum gains of:

9 wheel horsepower. 10 lb-ft of torque.

These improvements were recorded at approximately 4,100 RPM in the tested configuration.

Results depend on the engine, vehicle condition, exhaust configuration and testing conditions. They are not guaranteed gains for every Boxster or Cayman.

Sharper Throttle Response

The freer-flowing exhaust arrangement is designed to support quicker and more consistent engine response during acceleration.

Enhanced Flat-Six Exhaust Sound

The Competition Headers and Valved Exhaust System work together to produce a stronger and more distinctive exhaust note.

The catalyst-free construction increases the amount of engine sound passing through the exhaust.

Selectable Exhaust Characteristics

Unlike a fixed competition exhaust, the SOUL valved arrangement allows the driver to select between more controlled and more aggressive exhaust sound modes.

Weight Reduction

SOUL reports that the Competition Headers weigh approximately 19 lb, compared with 26 lb for the factory manifold and catalyst assemblies, excluding hardware.

This represents a manufacturer-reported saving of approximately 7 lb (3.2 kg) for the headers.

The separately listed Valved Exhaust System also offers weight-saving potential compared with the original rear exhaust.

These component-specific figures should not be presented as a verified total package weight saving without confirmation.

Durable Stainless Steel Construction

T304L stainless steel offers corrosion resistance and durability under repeated thermal expansion and contraction.

The exhaust also incorporates reinforced silencer casings and mounting components.

Compatibility with Factory PSE

The Valved Exhaust System is designed to operate with the appropriate factory Porsche Sport Exhaust valve controls.

Valve Control for Non-PSE Vehicles

The supplied SOUL controller allows compatible vehicles without factory PSE to gain selectable exhaust valve operation.

Premium Exhaust Tip Options

The package offers a choice of stainless steel and titanium exhaust tips in different styles and finishes.

Complete Integrated Upgrade

Combining the Competition Headers and Valved Exhaust System provides an integrated exhaust solution developed by the same manufacturer.

Manufacturer Lifetime Warranty

SOUL Performance provides a lifetime warranty for its exhaust components, subject to the published warranty conditions.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

POR.9872.COPKG.SLTT

The product you are viewing cross references to these numbers

SOUL Competition Exhaust Package, Titanium Tips (Straight Cut Single Wall)

The SOUL Performance Competition Package is a premium aftermarket performance exhaust upgrade designed for Porsche 987.2 Boxster and Cayman models manufactured between 2009 and 2012.

Fits:

• Porsche Boxster 987 MKII 2.9L 2009-12
• Porsche Boxster S 987 MKII 3.4L 2009-12
• Porsche Cayman 2.9L 987C MKII 2009-12
• Porsche Cayman S / R 3.4L 987C MKII 2009-12  

Exhaust Package Includes:

• Valved Exhaust System
• Competition Headers

Developed for Porsche's naturally aspirated 2.9-litre and 3.4-litre flat-six engines, this complete exhaust package combines SOUL Competition Headers with the manufacturer's Valved Exhaust System.

The package replaces the original exhaust manifold and catalytic converter assemblies, together with the factory rear exhaust, to provide a high-flow stainless steel exhaust arrangement.

Unlike the SOUL Street Package, which incorporates high-flow catalytic converters, the Competition Package uses catalyst-free exhaust headers. This reduces exhaust restriction and creates a more direct path for gases leaving the engine.

The Competition Headers feature 2-inch primary runners, port-matched mounting flanges, smooth-radius tubing and optimised exhaust collectors.

These design features are intended to improve exhaust scavenging, reduce unnecessary turbulence and enhance the engine's responsiveness.

The accompanying SOUL Valved Exhaust System uses mandrel-bent T304L stainless steel tubing, reinforced performance silencers, vacuum-operated exhaust valves and an X-pipe outlet arrangement.

The valved design provides two distinct exhaust sound characteristics.

With the valves closed, exhaust gases pass through specially developed sound-absorbing silencers, producing a deeper and more controlled exhaust tone. This arrangement is designed to minimise unwanted cabin drone during steady driving.

With the valves open, the exhaust gases follow a more direct route, producing a louder, more aggressive flat-six soundtrack.

The system is designed to suit vehicles with or without factory Porsche Sport Exhaust (PSE). The SOUL valve controller supplied with the valved exhaust allows selectable operation on compatible non-PSE vehicles and can provide manual override functionality on appropriately equipped PSE vehicles.

Manufactured from corrosion-resistant stainless steel, the package is engineered to withstand repeated thermal cycling, exhaust vibration and demanding performance driving.

SOUL Performance reports dynamometer testing on a 987.2 Cayman S equipped with PDK transmission, achieving a maximum improvement of 9 wheel horsepower and 10 lb-ft of torque at approximately 4,100 RPM.

The manufacturer has also track-tested the combination on its Project Cayman R.

The package is designed for direct bolt-on installation, with the components checked in fitting fixtures before dispatch.

Backed by the manufacturer's lifetime warranty, subject to its terms, the SOUL Competition Package is intended for Porsche owners seeking improved exhaust flow, a more engaging engine response and an aggressive, selectable exhaust soundtrack.

What This Product Does:
The Competition Package replaces major sections of the original exhaust system to improve the movement of combustion gases and allow the driver to select different exhaust sound characteristics.

The package consists of two principal components.

1. SOUL Performance Competition Headers

The Competition Headers collect exhaust gases as they leave the cylinder heads.

They replace the original exhaust manifolds and catalytic converter assemblies with stainless steel headers designed to reduce exhaust restriction.

Their main functions include:

• Collecting exhaust gases: Direct spent combustion gases away from the engine's cylinder heads.
  
• Improving exhaust flow: Use smooth-radius pipework and optimised collectors to reduce unnecessary restrictions.
  
• Supporting exhaust scavenging: Encourage efficient movement of exhaust pulses through the primary runners.
  
• Reducing exhaust backpressure: Remove the factory catalytic converters from the primary exhaust path.
  
• Supporting throttle response: Help the engine respond more efficiently to accelerator input.
  
• Increasing performance potential: Provide a freer-flowing exhaust arrangement for the naturally aspirated flat-six.
  
• Enhancing exhaust sound: Allow more of the engine's original exhaust character to pass into the rear system.
  
• Reducing weight: Replace the heavier factory manifold and catalyst assemblies with stainless steel performance headers.

The 2-inch primary runners and optimised collectors are designed for the characteristics of the 987.2 engine family.

2. SOUL Performance Valved Exhaust System

The Valved Exhaust System receives gases from the headers and directs them towards the rear exhaust outlets.

Its main functions include:

• Providing selectable quiet and aggressive exhaust sound modes.
• Reducing unwanted resonance with the valves closed.
• Producing a louder exhaust note with the valves open.
• Supporting efficient exhaust flow through mandrel-bent pipework.
• Providing an X-pipe outlet arrangement.
• Maintaining compatibility with the relevant PSE or supplied valve-control system.
• Supporting secure exhaust mounting through reinforced components.
• Enhancing the vehicle's rear appearance with premium exhaust tips.

 
Exhaust Sound Characteristics:

Valves Closed – Controlled Exhaust Tone

With the valves closed, exhaust gases pass through the SOUL performance silencers.

These contain sound-absorbing materials designed to reduce low-frequency resonance and control exhaust volume.

Benefits include:

• A deeper, more restrained flat-six exhaust note.
• Reduced cabin drone compared with open-valve operation.
• A more controlled sound during steady driving.
• Greater flexibility than a permanently unrestricted exhaust.

Valves Open – Motorsport-Inspired Sound

With the exhaust valves open, gases follow a more direct route through the performance exhaust.

This produces a much stronger exhaust note, particularly during acceleration and high-RPM operation.

Drivers may notice:

• A louder, more aggressive flat-six soundtrack.
• Greater sound intensity during acceleration.
• A more pronounced exhaust note during downshifts.
• Stronger engine character at higher RPM.
• A distinctive motorsport-inspired tone.

The final sound depends on engine specification, valve operation and driving conditions.

Track Noise Note: The system may exceed the sound restrictions imposed by some circuits and track-day organisers. Actual noise levels should be measured on the completed vehicle.

Why Upgrading Matters:

Improved Exhaust Flow

The Competition Headers use smooth-radius runners, port-matched flanges and optimised collectors.

By removing the factory catalytic converters, the system reduces exhaust restriction and supports more efficient exhaust gas movement.

Increased Performance Potential

SOUL Performance reports Dynojet testing on its Cayman S with PDK transmission.

The manufacturer recorded maximum gains of:

9 wheel horsepower. 10 lb-ft of torque.

These improvements were recorded at approximately 4,100 RPM in the tested configuration.

Results depend on the engine, vehicle condition, exhaust configuration and testing conditions. They are not guaranteed gains for every Boxster or Cayman.

Sharper Throttle Response

The freer-flowing exhaust arrangement is designed to support quicker and more consistent engine response during acceleration.

Enhanced Flat-Six Exhaust Sound

The Competition Headers and Valved Exhaust System work together to produce a stronger and more distinctive exhaust note.

The catalyst-free construction increases the amount of engine sound passing through the exhaust.

Selectable Exhaust Characteristics

Unlike a fixed competition exhaust, the SOUL valved arrangement allows the driver to select between more controlled and more aggressive exhaust sound modes.

Weight Reduction

SOUL reports that the Competition Headers weigh approximately 19 lb, compared with 26 lb for the factory manifold and catalyst assemblies, excluding hardware.

This represents a manufacturer-reported saving of approximately 7 lb (3.2 kg) for the headers.

The separately listed Valved Exhaust System also offers weight-saving potential compared with the original rear exhaust.

These component-specific figures should not be presented as a verified total package weight saving without confirmation.

Durable Stainless Steel Construction

T304L stainless steel offers corrosion resistance and durability under repeated thermal expansion and contraction.

The exhaust also incorporates reinforced silencer casings and mounting components.

Compatibility with Factory PSE

The Valved Exhaust System is designed to operate with the appropriate factory Porsche Sport Exhaust valve controls.

Valve Control for Non-PSE Vehicles

The supplied SOUL controller allows compatible vehicles without factory PSE to gain selectable exhaust valve operation.

Premium Exhaust Tip Options

The package offers a choice of stainless steel and titanium exhaust tips in different styles and finishes.

Complete Integrated Upgrade

Combining the Competition Headers and Valved Exhaust System provides an integrated exhaust solution developed by the same manufacturer.

Manufacturer Lifetime Warranty

SOUL Performance provides a lifetime warranty for its exhaust components, subject to the published warranty conditions.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

POR.9872.COPKG.SWTT

The product you are viewing cross references to these numbers

SOUL Street Exhaust Package, Black Chrome Tips (Dual Wall Chrome). 

The SOUL Performance Street Package is a premium aftermarket exhaust upgrade developed specifically for the Porsche 981 Cayman GT4, Boxster Spyder and GT4 Clubsport models manufactured between 2015 and 2016.

Fits:

• Porsche Boxster 981 Spyder 3.8L 2016
• Porsche Cayman GT4 3.8L 2015-16  

Designed for the naturally aspirated 3.8-litre flat-six engine, this comprehensive package combines SOUL Performance Long Tube Street Headers with its electronically controlled Valved Exhaust System.

The package replaces the original exhaust manifold and catalytic converter assemblies, together with the factory rear exhaust system, to provide an integrated high-performance exhaust arrangement.

Unlike the SOUL Competition Package, which removes the factory catalytic converters, the Street Package incorporates high-flow catalytic converters within its long-tube headers.

These converters are designed to provide a less restrictive exhaust path while retaining catalytic exhaust treatment.

The headers feature 2-inch primary runners, smooth-radius tubing, port-matched mounting flanges and optimised collectors to support efficient exhaust gas movement away from the engine.

Manufactured from T304L stainless steel, the headers are engineered for durability, corrosion resistance and repeated exposure to high exhaust temperatures.

The accompanying SOUL Valved Exhaust System uses mandrel-bent stainless steel tubing, specially developed rear silencers and electronically controlled exhaust valves.

With the exhaust valves closed, gases are directed through sound-absorbing mufflers that reduce unwanted exhaust resonance and help maintain a more refined driving experience.

With the valves open, exhaust gases follow a more direct path, producing a louder, more pronounced flat-six soundtrack.

This dual-character design allows the driver to enjoy a sporting exhaust note while retaining the flexibility of selectable exhaust operation.

The package is designed to integrate with the appropriate original Porsche exhaust valve controls, allowing the driver to continue using the factory exhaust button.

The Street Package is designed for direct bolt-on installation on compatible vehicles, with manufacturer-supplied fitting instructions.

SOUL Performance also reports measurable performance improvements from its Long Tube Street Headers when combined with suitable ECU tuning.

Backed by the manufacturer's lifetime warranty, subject to the applicable terms, this package offers a comprehensive exhaust upgrade for owners seeking enhanced engine response, a more engaging flat-six sound and an integrated stainless steel exhaust system.

What This Product Does:
The Street Package replaces the original exhaust manifolds, catalytic converter assemblies and rear exhaust system with components designed to improve exhaust flow and provide selectable exhaust sound characteristics.

It consists of two main systems.

1. SOUL Performance Long Tube Street Headers

The Long Tube Street Headers collect exhaust gases as they leave the engine's cylinder heads.

They replace the original Porsche exhaust manifolds and catalytic converters with a stainless steel assembly incorporating long primary runners, optimised collectors and high-flow catalytic converters.

Their main functions include:
Collecting exhaust gases: Direct combustion gases away from the cylinder heads.
Improving exhaust flow: Use smooth-radius runners and carefully developed collectors.
Supporting exhaust scavenging: Encourage efficient exhaust pulse movement through the primary pipes.
Reducing unnecessary restriction: Use high-flow catalytic converters designed for improved gas flow.
Supporting engine performance: Help the naturally aspirated engine breathe more efficiently.
Improving throttle response: Support more responsive engine behaviour during acceleration.
Enhancing exhaust sound: Alter the exhaust pulse characteristics to create a stronger flat-six tone.
Retaining catalytic treatment: Pass exhaust gases through integrated high-flow catalytic converters.
Supporting high-RPM operation: Use a runner and collector design developed for the GT4's 3.8L engine.
Providing durability: Use stainless steel construction for demanding exhaust operating conditions.

2. SOUL Performance Valved Exhaust System

The Valved Exhaust System receives gases from the headers and directs them through the rear exhaust assembly.

Its electronically controlled valves provide two different exhaust sound characteristics.

The main functions include:
Directing exhaust gases towards the rear outlets.
Providing selectable exhaust sound modes.
Reducing unwanted resonance with the valves closed.
Producing a more aggressive exhaust note with the valves open.
Supporting efficient exhaust flow through mandrel-bent tubing.
Maintaining compatibility with the applicable factory exhaust valve controls.
Providing durable stainless steel rear silencers.
Enhancing the vehicle's rear appearance through selectable exhaust tips.

Why Upgrading Matters:
The SOUL Performance Street Package provides a comprehensive exhaust upgrade designed to improve exhaust flow, engine response and driving enjoyment.

1. Improved Exhaust Flow

The Long Tube Street Headers incorporate smooth-radius primary runners, optimised collectors and high-flow catalytic converters.

These components are designed to reduce unnecessary restrictions and improve exhaust gas movement.

2. Increased Performance Potential

SOUL Performance reports third-party dynamometer testing of its Long Tube Street Headers on a Dyno Dynamics dynamometer.

The manufacturer's published figures include:

• Approximately 30 wheel horsepower improvement in a tested configuration with supporting ECU tuning.
   Approximately
• Approximately 12 wheel horsepower incremental improvement attributed to the Street Headers after the ECU tune had been applied.

These figures relate to the Street Headers' published testing and should not be presented as independently verified gains for the complete Street Package.

Actual performance depends on the vehicle, ECU calibration, engine condition and other modifications.

3. Sharper Throttle Response

The freer-flowing headers are designed to help the engine respond more efficiently to accelerator input.

This can enhance the driving experience during acceleration, particularly at higher engine speeds.

4. Enhanced Flat-Six Sound

The combination of the long-tube headers and valved rear exhaust creates a more pronounced engine note.

The system is designed to highlight the naturally aspirated engine's characteristic sound without requiring permanently loud exhaust operation.

5. Selectable Exhaust Volume

The electronically controlled exhaust valves allow different exhaust sound modes.

This provides additional flexibility compared with a fixed, non-valved exhaust arrangement.

6. High-Flow Catalytic Converters

Unlike the catalyst-free Competition Package, the Street Package incorporates high-flow catalytic converters.

These provide catalytic exhaust treatment while being designed to reduce restriction.

However, their presence does not guarantee compliance with UK emissions, MOT or other public-road requirements.

7. Reduced Unwanted Drone

The SOUL mufflers incorporate sound-absorbing materials intended to minimise cabin resonance.

This is particularly beneficial during steady-speed driving.

8. Durable Stainless Steel Construction

The headers and rear exhaust use T304L stainless steel.

This material offers corrosion resistance and durability under repeated heating and cooling cycles.

9. Factory Exhaust Valve Control Compatibility

The Valved Exhaust System is designed to integrate with the appropriate original Porsche exhaust valve controls.

The driver can continue using the familiar factory exhaust control button.

10. Complete Integrated Upgrade

The package combines the Long Tube Street Headers and Valved Exhaust System in one manufacturer's exhaust solution.

This helps ensure the components are designed to work together.

11. Premium Exhaust Tip Options

A variety of stainless steel and titanium exhaust tips allows the owner to personalise the vehicle's rear appearance.

12. Manufacturer Warranty

SOUL Performance provides a lifetime warranty for the included exhaust components, subject to its published warranty conditions.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

POR.GT4.STPKG.BC

The product you are viewing cross references to these numbers

SOUL Street Exhaust Package, Polished Chrome Tips (Dual Wall Chrome). 

The SOUL Performance Street Package is a complete aftermarket performance exhaust upgrade designed specifically for Porsche 987.1 Boxster and Cayman models manufactured between 2005 and 2008.

Fits:

• Porsche Boxster 987 2.7L 2005-08/08
• Porsche Boxster 987 S 3.2/3.4L 2005-08/08
• Porsche Cayman 2.7L 987C 2006-08
• Porsche Cayman S 3.4L 987C 2005-08  

Exhaust Package Includes:

• Performance Exhaust System
• Long Tube Street Headers

Developed for Porsche's naturally aspirated flat-six engines, this comprehensive exhaust package combines SOUL Performance Long Tube Street Headers with HJS 200-cell high-flow catalytic converters and the SOUL Performance non-valved rear exhaust system.

The package is designed to improve exhaust gas flow, enhance throttle response, reduce weight and produce a deeper, more distinctive flat-six soundtrack.

Unlike a conventional rear silencer replacement, the SOUL Street Package upgrades the exhaust system from the cylinder-head outlets through to the rear exhaust tips.

The original Porsche exhaust features exhaust manifolds with primary catalytic converters and a rear exhaust assembly incorporating secondary catalytic converters. Although these components are designed to meet the vehicle's original emissions and noise requirements, they also introduce restrictions into the exhaust system.

SOUL Performance developed its Street Package to address these restrictions while maintaining a balanced exhaust sound suitable for drivers who value refinement as well as performance.

What This Product Does:
The SOUL Performance Street Package collects exhaust gases from the engine, directs them through high-flow catalytic converters and performance silencers, and releases them through the rear exhaust outlets.

It is designed to reduce unnecessary exhaust restriction while enhancing the sound of the naturally aspirated flat-six engine.

1. Improves Exhaust Gas Flow

The Long Tube Street Headers use carefully developed primary runners and collectors to support efficient movement of combustion gases.

The rear exhaust uses mandrel-bent tubing to minimise unnecessary restrictions.

Together, these components create a freer-flowing exhaust arrangement.

2. Supports Exhaust Scavenging

The runner and collector geometry helps exhaust gases move away from the cylinder heads.

Efficient exhaust scavenging can support engine breathing and responsiveness, particularly during acceleration.

3. Provides Catalytic Exhaust Treatment

The integrated HJS 200-cell catalytic converters treat exhaust gases while allowing greater flow potential than the original restrictive arrangement.

They replace the factory primary catalytic converter assemblies.

Note: The original secondary catalytic converters are removed by the SOUL rear exhaust.

4. Enhances Throttle Response

Improved exhaust gas flow may allow the engine to respond more readily to accelerator input.

This can make the vehicle feel more responsive during acceleration and spirited driving.

5. Produces a More Distinctive Exhaust Sound

The complete package delivers a deeper, fuller and more engaging flat-six exhaust note.

The long-tube headers influence exhaust tone, while the rear silencers control unwanted resonance.

6. Reduces Unwanted Cabin Drone

The performance silencers are specifically engineered to minimise the low-frequency resonance sometimes associated with aftermarket exhaust systems.

This helps maintain a more comfortable driving experience.

7. Reduces Exhaust Weight

The SOUL rear exhaust is approximately 15 lb lighter than the equivalent factory rear exhaust components, according to the manufacturer.

Additional weight savings may result from the replacement headers, although a verified total package weight reduction is not specified.

8. Provides Durable Exhaust Construction

The T304L stainless steel tubing, reinforced silencer casings and precision-fabricated headers are designed to withstand repeated heating, cooling and vibration.

9. Enhances Rear-End Styling

Different exhaust tip styles and finishes allow the vehicle's appearance to be personalised.





Why Upgrading Matters:

1. Complete Exhaust System Improvement

The package upgrades both the original exhaust manifolds and the rear exhaust assembly.

This provides a comprehensive solution rather than changing only the rear silencers.

2. Improved Exhaust Flow

The 1.75-inch long-tube primary runners, optimised collectors, HJS high-flow catalytic converters and mandrel-bent rear pipework work together to reduce unnecessary restrictions.

3. Enhanced Engine Responsiveness

More efficient exhaust flow may improve the way the naturally aspirated flat-six engine responds to accelerator input.

4. More Engaging Flat-Six Sound

The complete system delivers a deeper, sportier exhaust tone while retaining a controlled sound during normal driving.

5. Reduced Cruising Drone

The rear silencers are designed to minimise unwanted cabin resonance.

This provides a more balanced sound experience than many unrestricted race exhaust systems.

6. Premium HJS Catalytic Converters

The headers incorporate HJS 200-cell high-flow catalytic converters with a durable double-foil construction.

These provide catalytic exhaust treatment while supporting improved gas flow.

7. Lightweight Rear Exhaust

SOUL reports that its Performance Exhaust System weighs approximately 21.7 lb, compared with 36.6 lb for the factory rear exhaust.

This provides a saving of approximately 15 lb (6.8 kg) for the rear exhaust alone.

8. Stainless Steel Durability

The T304L stainless steel construction provides corrosion resistance and durability under demanding exhaust temperatures.

9. Reinforced Exhaust Mountings

The rear exhaust uses fortified silencer casings and strengthened brackets designed to resist vibration-related fatigue.

10. No Exhaust Valve Maintenance

The non-valved system avoids the added complexity of vacuum-operated exhaust valves and electronic valve controls.

11. Premium Exhaust Tip Options

Available tip configurations include stainless steel, double-wall chrome-style and lightweight titanium designs.

12. Direct Bolt-On Installation

SOUL tests its components in dedicated fitting fixtures to support accurate installation.

The package includes fitting instructions for the individual components.

13. Manufacturer Warranty Coverage

The stainless steel exhaust components benefit from SOUL's lifetime warranty, subject to the manufacturer's terms.

The HJS catalytic converters have separate three-year warranty coverage.

 

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

POR.9871.STPKG.BC

The product you are viewing cross references to these numbers

SOUL Street Exhaust Package, Black Chrome Tips (Dual Wall Chrome)

The SOUL Performance Street Package is a premium aftermarket exhaust upgrade designed specifically for Porsche 987.2 Boxster and Cayman models manufactured between 2009 and 2012.

Fits:

• Porsche Boxster 987 MKII 2.9L 2009-12
• Porsche Boxster S 987 MKII 3.4L 2009-12
• Porsche Cayman 2.9L 987C MKII 2009-12
• Porsche Cayman S / R 3.4L 987C MKII 2009-12  

Exhaust Package Includes:

• Valved Exhaust System
• Long Tube Street Headers

Developed for the naturally aspirated 2.9-litre and 3.4-litre flat-six engines, this complete performance exhaust package combines SOUL Performance Long Tube Street Headers with its Valved Exhaust System.

The package replaces the original exhaust manifolds, primary catalytic converter assemblies and rear exhaust system with a carefully engineered stainless steel arrangement designed to improve exhaust flow, enhance engine responsiveness and deliver a more distinctive flat-six soundtrack.

Unlike a conventional rear silencer upgrade, the SOUL Street Package addresses exhaust flow throughout a larger section of the system, from the cylinder-head outlets to the rear exhaust tips.

The Long Tube Street Headers feature 2-inch primary runners, port-matched mounting flanges, smooth-radius tubing and optimised exhaust collectors.

These design features help minimise unnecessary exhaust restrictions and support efficient movement of combustion gases away from the engine.

The headers incorporate large-diameter, high-flow catalytic converters, providing a freer-flowing alternative to the factory catalyst arrangement while retaining catalytic exhaust treatment.

The accompanying SOUL Valved Exhaust System uses mandrel-bent T304L stainless steel tubing, reinforced performance silencers, vacuum-operated exhaust valves and an outlet X-pipe.

The exhaust valves allow the driver to select between two different sound characteristics.

With the valves closed, exhaust gases pass through specially developed sound-absorbing silencers, producing a refined yet sporting exhaust note designed to minimise unwanted cabin drone.

With the valves open, exhaust gases follow a more direct route through the performance exhaust, creating a louder and more aggressive flat-six soundtrack.

The system is designed for vehicles both with and without factory Porsche Sport Exhaust (PSE).

On PSE-equipped vehicles, the exhaust can work with the appropriate factory valve-control arrangement. For vehicles without PSE, the supplied SOUL valve controller provides selectable exhaust operation.

Manufactured using corrosion-resistant T304L stainless steel, the package is engineered for durability under repeated exhaust heating and cooling cycles.

SOUL Performance reports dynamometer-tested performance improvements for the combined package and provides a lifetime warranty for its exhaust components, subject to the manufacturer's conditions.

The Street Package is ideal for Porsche enthusiasts seeking improved exhaust flow, enhanced engine response, selectable exhaust sound and a comprehensive performance exhaust upgrade.

What This Product Does:
The SOUL Performance Street Package replaces the factory exhaust manifold and rear exhaust assemblies with components designed to improve gas flow and provide selectable exhaust sound characteristics.

It consists of two principal components.

1. SOUL Performance Long Tube Street Headers

The Long Tube Street Headers collect combustion gases leaving the engine's cylinder heads and direct them into the downstream exhaust.

Their main functions include:

• Collecting exhaust gases: Direct combustion gases away from the cylinder heads.
  
• Improving exhaust flow: Use long runners and smooth internal passages to reduce unnecessary restrictions.
  
• Supporting exhaust scavenging: Employ carefully developed runner and collector geometry to encourage efficient exhaust pulse movement. Improving throttle response: Support more responsive engine behaviour during acceleration.
  
• Increasing performance potential: Help the engine breathe more efficiently.
  
• Retaining catalytic treatment: Pass exhaust gases through integrated high-flow catalytic converters.
  
• Enhancing engine sound: Alter the exhaust flow characteristics to produce a fuller flat-six tone.
  
• Supporting durability: Use stainless steel construction for high-temperature operation.

The 2-inch primary runners are designed for the characteristics of the 987.2 flat-six engine family.

2. SOUL Performance Valved Exhaust System

The Valved Exhaust System receives exhaust gases from the headers and directs them through the rear exhaust assembly.

Its vacuum-operated valves allow different exhaust flow paths and resulting sound characteristics.

Its main functions include:

• Directing exhaust gases towards the rear outlets.
• Providing selectable quiet and aggressive exhaust modes.
• Reducing unwanted drone with the valves closed.
• Producing a stronger exhaust note with the valves open.
• Supporting efficient exhaust flow through mandrel-bent pipework.
• Allowing operation through the appropriate factory or supplied valve controller.
• Providing reinforced exhaust silencers and mounting brackets.
• Enhancing rear styling with a choice of exhaust tips.       

Exhaust Sound Characteristics:

Valves Closed – Refined Touring Sound

With the exhaust valves closed, gases pass through the specially developed rear silencers.

The silencers contain sound-absorbing material designed to reduce unwanted resonance while retaining a sporting exhaust note.

Benefits include:

• A deeper and more refined flat-six sound.
• Reduced low-frequency cabin drone.
• More controlled exhaust volume during steady driving.
• Improved comfort during longer journeys.
• A suitable sound setting when maximum exhaust volume is not desired.

SOUL describes its closed-valve mode as designed for daily driving without excessive drone. However, the sound of the complete Street Package may differ from that of the valved exhaust fitted with standard headers.

Valves Open – Aggressive Flat-Six Sound

With the valves open, exhaust gases follow a more direct route through the rear exhaust.

This allows more of the engine's natural exhaust sound to be heard.

Benefits include:

• A louder, more aggressive exhaust note.
• Greater sound intensity during acceleration.
• More pronounced flat-six character at higher engine speeds.
• Stronger exhaust sound during downshifts.
• A more engaging driving experience.

The final sound depends on engine specification, ECU calibration, vehicle condition and driving circumstances.

Why Upgrading Matters:

1. Improved Exhaust Flow

The Long Tube Street Headers use smooth-radius runners, port-matched flanges and optimised collectors.

Together with the high-flow catalytic converters and performance rear exhaust, these components are intended to improve the movement of exhaust gases.

2. Increased Performance Potential

SOUL Performance reports dynamometer testing of the combined system on a Porsche 987.2 Cayman S equipped with PDK transmission.

The manufacturer recorded maximum gains of approximately:

8 wheel horsepower. 11 lb-ft of torque.

These improvements were recorded around 4,100 RPM in the tested configuration.

The results depend on the vehicle, testing conditions and installed components and should not be presented as guaranteed gains.

3. Sharper Throttle Response

Improved exhaust gas flow may help the naturally aspirated flat-six engine respond more readily to accelerator input.

4. Enhanced Flat-Six Sound

The combination of long-tube headers and the valved rear exhaust produces a more pronounced engine soundtrack.

Drivers can select different exhaust sound characteristics according to preference.

5. Selectable Exhaust Volume

The vacuum-operated exhaust valves allow the driver to change between a refined and an aggressive exhaust setting.

This provides greater versatility than a permanently loud, non-valved system.

6. High-Flow Catalytic Converters

Unlike the catalyst-free Competition Package, the Street Package incorporates catalytic converters.

These are designed to reduce exhaust restriction while providing catalytic exhaust treatment.

Their presence does not automatically establish emissions or road-use compliance.

7. Reduced Unwanted Drone

The rear silencers are designed to minimise low-frequency cabin resonance.

This is particularly valuable during steady-speed driving.

8. Compatibility with Factory PSE

The system can be installed on vehicles with factory Porsche Sport Exhaust.

It is also suitable for non-PSE vehicles using the supplied SOUL valve controller.

9. Stainless Steel Durability

The T304L stainless steel headers and rear exhaust offer corrosion resistance and durability under high-temperature operating conditions.

10. Reinforced Exhaust Construction

The Valved Exhaust System incorporates reinforced silencer casings and strengthened mounting brackets to withstand exhaust vibration and thermal cycling.

11. Reduced Weight

SOUL reports that its Valved Exhaust System weighs approximately 5 lb less than the factory rear exhaust components.

The separately listed Street Headers also have a manufacturer-reported weight reduction.

These figures relate to the individual components and should not be presented as a verified complete-package weight saving without confirmation.

12. Premium Exhaust Tip Options

The package offers a selection of stainless steel and titanium exhaust tips.

This allows owners to customise the rear appearance of their vehicle.

13. Complete Integrated Exhaust Upgrade

The package combines the manufacturer's Long Tube Street Headers and Valved Exhaust System into one compatible exhaust solution.

14. Manufacturer Lifetime Warranty

SOUL Performance provides a lifetime warranty for its exhaust components, subject to the published warranty terms.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

POR.9872.STPKG.BC

The product you are viewing cross references to these numbers

SOUL Street Exhaust Package, Brushed Tips (Slash Cut Single Wall). 

The SOUL Performance Street Package is a premium aftermarket exhaust upgrade developed specifically for the Porsche 981 Cayman GT4, Boxster Spyder and GT4 Clubsport models manufactured between 2015 and 2016.

Fits:

• Porsche Boxster 981 Spyder 3.8L 2016
• Porsche Cayman GT4 3.8L 2015-16  

Designed for the naturally aspirated 3.8-litre flat-six engine, this comprehensive package combines SOUL Performance Long Tube Street Headers with its electronically controlled Valved Exhaust System.

The package replaces the original exhaust manifold and catalytic converter assemblies, together with the factory rear exhaust system, to provide an integrated high-performance exhaust arrangement.

Unlike the SOUL Competition Package, which removes the factory catalytic converters, the Street Package incorporates high-flow catalytic converters within its long-tube headers.

These converters are designed to provide a less restrictive exhaust path while retaining catalytic exhaust treatment.

The headers feature 2-inch primary runners, smooth-radius tubing, port-matched mounting flanges and optimised collectors to support efficient exhaust gas movement away from the engine.

Manufactured from T304L stainless steel, the headers are engineered for durability, corrosion resistance and repeated exposure to high exhaust temperatures.

The accompanying SOUL Valved Exhaust System uses mandrel-bent stainless steel tubing, specially developed rear silencers and electronically controlled exhaust valves.

With the exhaust valves closed, gases are directed through sound-absorbing mufflers that reduce unwanted exhaust resonance and help maintain a more refined driving experience.

With the valves open, exhaust gases follow a more direct path, producing a louder, more pronounced flat-six soundtrack.

This dual-character design allows the driver to enjoy a sporting exhaust note while retaining the flexibility of selectable exhaust operation.

The package is designed to integrate with the appropriate original Porsche exhaust valve controls, allowing the driver to continue using the factory exhaust button.

The Street Package is designed for direct bolt-on installation on compatible vehicles, with manufacturer-supplied fitting instructions.

SOUL Performance also reports measurable performance improvements from its Long Tube Street Headers when combined with suitable ECU tuning.

Backed by the manufacturer's lifetime warranty, subject to the applicable terms, this package offers a comprehensive exhaust upgrade for owners seeking enhanced engine response, a more engaging flat-six sound and an integrated stainless steel exhaust system.

What This Product Does:
The Street Package replaces the original exhaust manifolds, catalytic converter assemblies and rear exhaust system with components designed to improve exhaust flow and provide selectable exhaust sound characteristics.

It consists of two main systems.

1. SOUL Performance Long Tube Street Headers

The Long Tube Street Headers collect exhaust gases as they leave the engine's cylinder heads.

They replace the original Porsche exhaust manifolds and catalytic converters with a stainless steel assembly incorporating long primary runners, optimised collectors and high-flow catalytic converters.

Their main functions include:
Collecting exhaust gases: Direct combustion gases away from the cylinder heads.
Improving exhaust flow: Use smooth-radius runners and carefully developed collectors.
Supporting exhaust scavenging: Encourage efficient exhaust pulse movement through the primary pipes.
Reducing unnecessary restriction: Use high-flow catalytic converters designed for improved gas flow.
Supporting engine performance: Help the naturally aspirated engine breathe more efficiently.
Improving throttle response: Support more responsive engine behaviour during acceleration.
Enhancing exhaust sound: Alter the exhaust pulse characteristics to create a stronger flat-six tone.
Retaining catalytic treatment: Pass exhaust gases through integrated high-flow catalytic converters.
Supporting high-RPM operation: Use a runner and collector design developed for the GT4's 3.8L engine.
Providing durability: Use stainless steel construction for demanding exhaust operating conditions.

2. SOUL Performance Valved Exhaust System

The Valved Exhaust System receives gases from the headers and directs them through the rear exhaust assembly.

Its electronically controlled valves provide two different exhaust sound characteristics.

The main functions include:
Directing exhaust gases towards the rear outlets.
Providing selectable exhaust sound modes.
Reducing unwanted resonance with the valves closed.
Producing a more aggressive exhaust note with the valves open.
Supporting efficient exhaust flow through mandrel-bent tubing.
Maintaining compatibility with the applicable factory exhaust valve controls.
Providing durable stainless steel rear silencers.
Enhancing the vehicle's rear appearance through selectable exhaust tips.

Why Upgrading Matters:
The SOUL Performance Street Package provides a comprehensive exhaust upgrade designed to improve exhaust flow, engine response and driving enjoyment.

1. Improved Exhaust Flow

The Long Tube Street Headers incorporate smooth-radius primary runners, optimised collectors and high-flow catalytic converters.

These components are designed to reduce unnecessary restrictions and improve exhaust gas movement.

2. Increased Performance Potential

SOUL Performance reports third-party dynamometer testing of its Long Tube Street Headers on a Dyno Dynamics dynamometer.

The manufacturer's published figures include:

• Approximately 30 wheel horsepower improvement in a tested configuration with supporting ECU tuning.
   Approximately
• Approximately 12 wheel horsepower incremental improvement attributed to the Street Headers after the ECU tune had been applied.

These figures relate to the Street Headers' published testing and should not be presented as independently verified gains for the complete Street Package.

Actual performance depends on the vehicle, ECU calibration, engine condition and other modifications.

3. Sharper Throttle Response

The freer-flowing headers are designed to help the engine respond more efficiently to accelerator input.

This can enhance the driving experience during acceleration, particularly at higher engine speeds.

4. Enhanced Flat-Six Sound

The combination of the long-tube headers and valved rear exhaust creates a more pronounced engine note.

The system is designed to highlight the naturally aspirated engine's characteristic sound without requiring permanently loud exhaust operation.

5. Selectable Exhaust Volume

The electronically controlled exhaust valves allow different exhaust sound modes.

This provides additional flexibility compared with a fixed, non-valved exhaust arrangement.

6. High-Flow Catalytic Converters

Unlike the catalyst-free Competition Package, the Street Package incorporates high-flow catalytic converters.

These provide catalytic exhaust treatment while being designed to reduce restriction.

However, their presence does not guarantee compliance with UK emissions, MOT or other public-road requirements.

7. Reduced Unwanted Drone

The SOUL mufflers incorporate sound-absorbing materials intended to minimise cabin resonance.

This is particularly beneficial during steady-speed driving.

8. Durable Stainless Steel Construction

The headers and rear exhaust use T304L stainless steel.

This material offers corrosion resistance and durability under repeated heating and cooling cycles.

9. Factory Exhaust Valve Control Compatibility

The Valved Exhaust System is designed to integrate with the appropriate original Porsche exhaust valve controls.

The driver can continue using the familiar factory exhaust control button.

10. Complete Integrated Upgrade

The package combines the Long Tube Street Headers and Valved Exhaust System in one manufacturer's exhaust solution.

This helps ensure the components are designed to work together.

11. Premium Exhaust Tip Options

A variety of stainless steel and titanium exhaust tips allows the owner to personalise the vehicle's rear appearance.

12. Manufacturer Warranty

SOUL Performance provides a lifetime warranty for the included exhaust components, subject to its published warranty conditions.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

POR.GT4.STPKG.SLTBR

The product you are viewing cross references to these numbers

SOUL Street Exhaust Package, Brushed Tips (Straight Cut Single Wall). 

The SOUL Performance Street Package is a premium aftermarket exhaust upgrade developed specifically for the Porsche 981 Cayman GT4, Boxster Spyder and GT4 Clubsport models manufactured between 2015 and 2016.

Fits:

• Porsche Boxster 981 Spyder 3.8L 2016
• Porsche Cayman GT4 3.8L 2015-16  

Designed for the naturally aspirated 3.8-litre flat-six engine, this comprehensive package combines SOUL Performance Long Tube Street Headers with its electronically controlled Valved Exhaust System.

The package replaces the original exhaust manifold and catalytic converter assemblies, together with the factory rear exhaust system, to provide an integrated high-performance exhaust arrangement.

Unlike the SOUL Competition Package, which removes the factory catalytic converters, the Street Package incorporates high-flow catalytic converters within its long-tube headers.

These converters are designed to provide a less restrictive exhaust path while retaining catalytic exhaust treatment.

The headers feature 2-inch primary runners, smooth-radius tubing, port-matched mounting flanges and optimised collectors to support efficient exhaust gas movement away from the engine.

Manufactured from T304L stainless steel, the headers are engineered for durability, corrosion resistance and repeated exposure to high exhaust temperatures.

The accompanying SOUL Valved Exhaust System uses mandrel-bent stainless steel tubing, specially developed rear silencers and electronically controlled exhaust valves.

With the exhaust valves closed, gases are directed through sound-absorbing mufflers that reduce unwanted exhaust resonance and help maintain a more refined driving experience.

With the valves open, exhaust gases follow a more direct path, producing a louder, more pronounced flat-six soundtrack.

This dual-character design allows the driver to enjoy a sporting exhaust note while retaining the flexibility of selectable exhaust operation.

The package is designed to integrate with the appropriate original Porsche exhaust valve controls, allowing the driver to continue using the factory exhaust button.

The Street Package is designed for direct bolt-on installation on compatible vehicles, with manufacturer-supplied fitting instructions.

SOUL Performance also reports measurable performance improvements from its Long Tube Street Headers when combined with suitable ECU tuning.

Backed by the manufacturer's lifetime warranty, subject to the applicable terms, this package offers a comprehensive exhaust upgrade for owners seeking enhanced engine response, a more engaging flat-six sound and an integrated stainless steel exhaust system.

What This Product Does:
The Street Package replaces the original exhaust manifolds, catalytic converter assemblies and rear exhaust system with components designed to improve exhaust flow and provide selectable exhaust sound characteristics.

It consists of two main systems.

1. SOUL Performance Long Tube Street Headers

The Long Tube Street Headers collect exhaust gases as they leave the engine's cylinder heads.

They replace the original Porsche exhaust manifolds and catalytic converters with a stainless steel assembly incorporating long primary runners, optimised collectors and high-flow catalytic converters.

Their main functions include:
Collecting exhaust gases: Direct combustion gases away from the cylinder heads.
Improving exhaust flow: Use smooth-radius runners and carefully developed collectors.
Supporting exhaust scavenging: Encourage efficient exhaust pulse movement through the primary pipes.
Reducing unnecessary restriction: Use high-flow catalytic converters designed for improved gas flow.
Supporting engine performance: Help the naturally aspirated engine breathe more efficiently.
Improving throttle response: Support more responsive engine behaviour during acceleration.
Enhancing exhaust sound: Alter the exhaust pulse characteristics to create a stronger flat-six tone.
Retaining catalytic treatment: Pass exhaust gases through integrated high-flow catalytic converters.
Supporting high-RPM operation: Use a runner and collector design developed for the GT4's 3.8L engine.
Providing durability: Use stainless steel construction for demanding exhaust operating conditions.

2. SOUL Performance Valved Exhaust System

The Valved Exhaust System receives gases from the headers and directs them through the rear exhaust assembly.

Its electronically controlled valves provide two different exhaust sound characteristics.

The main functions include:
Directing exhaust gases towards the rear outlets.
Providing selectable exhaust sound modes.
Reducing unwanted resonance with the valves closed.
Producing a more aggressive exhaust note with the valves open.
Supporting efficient exhaust flow through mandrel-bent tubing.
Maintaining compatibility with the applicable factory exhaust valve controls.
Providing durable stainless steel rear silencers.
Enhancing the vehicle's rear appearance through selectable exhaust tips.

Why Upgrading Matters:
The SOUL Performance Street Package provides a comprehensive exhaust upgrade designed to improve exhaust flow, engine response and driving enjoyment.

1. Improved Exhaust Flow

The Long Tube Street Headers incorporate smooth-radius primary runners, optimised collectors and high-flow catalytic converters.

These components are designed to reduce unnecessary restrictions and improve exhaust gas movement.

2. Increased Performance Potential

SOUL Performance reports third-party dynamometer testing of its Long Tube Street Headers on a Dyno Dynamics dynamometer.

The manufacturer's published figures include:

• Approximately 30 wheel horsepower improvement in a tested configuration with supporting ECU tuning.
   Approximately
• Approximately 12 wheel horsepower incremental improvement attributed to the Street Headers after the ECU tune had been applied.

These figures relate to the Street Headers' published testing and should not be presented as independently verified gains for the complete Street Package.

Actual performance depends on the vehicle, ECU calibration, engine condition and other modifications.

3. Sharper Throttle Response

The freer-flowing headers are designed to help the engine respond more efficiently to accelerator input.

This can enhance the driving experience during acceleration, particularly at higher engine speeds.

4. Enhanced Flat-Six Sound

The combination of the long-tube headers and valved rear exhaust creates a more pronounced engine note.

The system is designed to highlight the naturally aspirated engine's characteristic sound without requiring permanently loud exhaust operation.

5. Selectable Exhaust Volume

The electronically controlled exhaust valves allow different exhaust sound modes.

This provides additional flexibility compared with a fixed, non-valved exhaust arrangement.

6. High-Flow Catalytic Converters

Unlike the catalyst-free Competition Package, the Street Package incorporates high-flow catalytic converters.

These provide catalytic exhaust treatment while being designed to reduce restriction.

However, their presence does not guarantee compliance with UK emissions, MOT or other public-road requirements.

7. Reduced Unwanted Drone

The SOUL mufflers incorporate sound-absorbing materials intended to minimise cabin resonance.

This is particularly beneficial during steady-speed driving.

8. Durable Stainless Steel Construction

The headers and rear exhaust use T304L stainless steel.

This material offers corrosion resistance and durability under repeated heating and cooling cycles.

9. Factory Exhaust Valve Control Compatibility

The Valved Exhaust System is designed to integrate with the appropriate original Porsche exhaust valve controls.

The driver can continue using the familiar factory exhaust control button.

10. Complete Integrated Upgrade

The package combines the Long Tube Street Headers and Valved Exhaust System in one manufacturer's exhaust solution.

This helps ensure the components are designed to work together.

11. Premium Exhaust Tip Options

A variety of stainless steel and titanium exhaust tips allows the owner to personalise the vehicle's rear appearance.

12. Manufacturer Warranty

SOUL Performance provides a lifetime warranty for the included exhaust components, subject to its published warranty conditions.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

POR.GT4.STPKG.SWTBR

The product you are viewing cross references to these numbers

SOUL Street Exhaust Package, Brushed Tips (Slash Cut Single Wall). 

The SOUL Performance Street Package is a complete aftermarket performance exhaust upgrade designed specifically for Porsche 987.1 Boxster and Cayman models manufactured between 2005 and 2008.

Fits:

• Porsche Boxster 987 2.7L 2005-08/08
• Porsche Boxster 987 S 3.2/3.4L 2005-08/08
• Porsche Cayman 2.7L 987C 2006-08
• Porsche Cayman S 3.4L 987C 2005-08  

Exhaust Package Includes:

• Performance Exhaust System
• Long Tube Street Headers

Developed for Porsche's naturally aspirated flat-six engines, this comprehensive exhaust package combines SOUL Performance Long Tube Street Headers with HJS 200-cell high-flow catalytic converters and the SOUL Performance non-valved rear exhaust system.

The package is designed to improve exhaust gas flow, enhance throttle response, reduce weight and produce a deeper, more distinctive flat-six soundtrack.

Unlike a conventional rear silencer replacement, the SOUL Street Package upgrades the exhaust system from the cylinder-head outlets through to the rear exhaust tips.

The original Porsche exhaust features exhaust manifolds with primary catalytic converters and a rear exhaust assembly incorporating secondary catalytic converters. Although these components are designed to meet the vehicle's original emissions and noise requirements, they also introduce restrictions into the exhaust system.

SOUL Performance developed its Street Package to address these restrictions while maintaining a balanced exhaust sound suitable for drivers who value refinement as well as performance.

What This Product Does:
The SOUL Performance Street Package collects exhaust gases from the engine, directs them through high-flow catalytic converters and performance silencers, and releases them through the rear exhaust outlets.

It is designed to reduce unnecessary exhaust restriction while enhancing the sound of the naturally aspirated flat-six engine.

1. Improves Exhaust Gas Flow

The Long Tube Street Headers use carefully developed primary runners and collectors to support efficient movement of combustion gases.

The rear exhaust uses mandrel-bent tubing to minimise unnecessary restrictions.

Together, these components create a freer-flowing exhaust arrangement.

2. Supports Exhaust Scavenging

The runner and collector geometry helps exhaust gases move away from the cylinder heads.

Efficient exhaust scavenging can support engine breathing and responsiveness, particularly during acceleration.

3. Provides Catalytic Exhaust Treatment

The integrated HJS 200-cell catalytic converters treat exhaust gases while allowing greater flow potential than the original restrictive arrangement.

They replace the factory primary catalytic converter assemblies.

Note: The original secondary catalytic converters are removed by the SOUL rear exhaust.

4. Enhances Throttle Response

Improved exhaust gas flow may allow the engine to respond more readily to accelerator input.

This can make the vehicle feel more responsive during acceleration and spirited driving.

5. Produces a More Distinctive Exhaust Sound

The complete package delivers a deeper, fuller and more engaging flat-six exhaust note.

The long-tube headers influence exhaust tone, while the rear silencers control unwanted resonance.

6. Reduces Unwanted Cabin Drone

The performance silencers are specifically engineered to minimise the low-frequency resonance sometimes associated with aftermarket exhaust systems.

This helps maintain a more comfortable driving experience.

7. Reduces Exhaust Weight

The SOUL rear exhaust is approximately 15 lb lighter than the equivalent factory rear exhaust components, according to the manufacturer.

Additional weight savings may result from the replacement headers, although a verified total package weight reduction is not specified.

8. Provides Durable Exhaust Construction

The T304L stainless steel tubing, reinforced silencer casings and precision-fabricated headers are designed to withstand repeated heating, cooling and vibration.

9. Enhances Rear-End Styling

Different exhaust tip styles and finishes allow the vehicle's appearance to be personalised.





Why Upgrading Matters:

1. Complete Exhaust System Improvement

The package upgrades both the original exhaust manifolds and the rear exhaust assembly.

This provides a comprehensive solution rather than changing only the rear silencers.

2. Improved Exhaust Flow

The 1.75-inch long-tube primary runners, optimised collectors, HJS high-flow catalytic converters and mandrel-bent rear pipework work together to reduce unnecessary restrictions.

3. Enhanced Engine Responsiveness

More efficient exhaust flow may improve the way the naturally aspirated flat-six engine responds to accelerator input.

4. More Engaging Flat-Six Sound

The complete system delivers a deeper, sportier exhaust tone while retaining a controlled sound during normal driving.

5. Reduced Cruising Drone

The rear silencers are designed to minimise unwanted cabin resonance.

This provides a more balanced sound experience than many unrestricted race exhaust systems.

6. Premium HJS Catalytic Converters

The headers incorporate HJS 200-cell high-flow catalytic converters with a durable double-foil construction.

These provide catalytic exhaust treatment while supporting improved gas flow.

7. Lightweight Rear Exhaust

SOUL reports that its Performance Exhaust System weighs approximately 21.7 lb, compared with 36.6 lb for the factory rear exhaust.

This provides a saving of approximately 15 lb (6.8 kg) for the rear exhaust alone.

8. Stainless Steel Durability

The T304L stainless steel construction provides corrosion resistance and durability under demanding exhaust temperatures.

9. Reinforced Exhaust Mountings

The rear exhaust uses fortified silencer casings and strengthened brackets designed to resist vibration-related fatigue.

10. No Exhaust Valve Maintenance

The non-valved system avoids the added complexity of vacuum-operated exhaust valves and electronic valve controls.

11. Premium Exhaust Tip Options

Available tip configurations include stainless steel, double-wall chrome-style and lightweight titanium designs.

12. Direct Bolt-On Installation

SOUL tests its components in dedicated fitting fixtures to support accurate installation.

The package includes fitting instructions for the individual components.

13. Manufacturer Warranty Coverage

The stainless steel exhaust components benefit from SOUL's lifetime warranty, subject to the manufacturer's terms.

The HJS catalytic converters have separate three-year warranty coverage.

 

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

POR.9871.STPKG.SLTBR

The product you are viewing cross references to these numbers