SOUL Performance Products

Porsche 981 Boxster / Cayman PDK  TRANSMISSION -  SOUL Race Exhaust System. 

SOUL’s Race Exhaust System is designed for aggressive track use and built around maximum durability, lightness, and performance.

• Fits all Porsche 981 Cayman / Boxster vehicles (2013-2016) PDK TRANSMISSION, with factory or SOUL headers (differences in tolerances from other manufacturers can create issues with over axle pipe clearance)
•  Designed and built in-house at our Willow Grove, PA facility
•  System weighs approximately up to 18 lbs / 8.1 kg less than factory exhaust non-PSE components ( 30 lbs vs 44 lbs non-PSE / 48 PSE with mounting brackets included)
•  All Soul Performance Products components are backed by a renowned Lifetime Warranty for both street and track use

DEVELOPMENT::
Our mission was to engineer a lightweight, durable, and cost-effective race exhaust system for the 981 Boxster and Cayman—one that delivers proven performance, reliability, and accessibility for serious track enthusiasts. By collaborating with respected shops, technicians, and seasoned drivers who have conducted their own independent testing over the years—including special thanks to Bryan Schute at Speed Sport Tuning and the teams at LN Engineering / BRS—we developed a track-bred system designed to meet the demands of competitive driving.

PIPING:
The system features full 2.5” over-axle piping, carefully profiled to provide sufficient clearance for axles and sway bar end links—even on aggressively lowered or heavily modified vehicles.

BESPOKE BRACKETS & MOUNTS:
Traditional welded hangers and brackets are prone to failure under the rigors of racing—a failure that can end a track day instantly. To solve this, SOUL designed a reinforced mounting solution that sheds over 5 lbs compared to the OEM setup, while remaining modular and easy to repair or replace after a track incident.
The forward piping connects to a custom SOUL transmission mounting brace—engineered for both manual and PDK models—via heavy-duty Mikalor band clamps. Additional rubber vibration dampeners support the over-axle piping, minimizing stress from flex and vibration across the system to ensure long-term durability under extreme use.

CONSTRUCTION:
Each system is handcrafted in-house by our skilled fabrication team using mandrel-bent .065″ wall, 2.5″ diameter T304L stainless steel tubing. Brackets are laser-cut, press brake-formed, and TIG welded for maximum strength, while all welds are back-purged to ensure long-term durability under the most extreme racing conditions.

SOUND:
This system is designed with track performance as the priority, not sound suppression. It is extremely loud, and even with resonators, some drone will be present. We do not recommend pairing this exhaust with aftermarket headers for street use. At wide-open throttle, however, the sound is nothing short of exhilarating—raw, aggressive, and unmistakably motorsport. For a more balanced option suited to daily driving, we suggest our Valved Exhaust System.

BOLT-ON INSTALLATION:
Every exhaust is rigorously quality-checked and fixture-tested to guarantee perfect fitment. Systems are securely foam-packed for safe delivery and include all-new high-grade hardware for the header-to-exhaust flanges. Thorough instructions are provided, making installation straightforward for most DIY enthusiasts.

LIFETIME WARRANTY: 
Enjoy your SOUL exhaust components with confidence on both the street and track as they are covered by our Lifetime Warranty! Our team will quickly work with you to resolve any issues or answer any questions that you may have.

NOTE:
+ This product is not CARB certified and may not be legal for use on emissions controlled vehicles; intended for off road use only

Please note: This item is not a stock product. It is a special order part and once ordered with us is not subject to cancellation or return unless proven not fit for purpose or defected.

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

POR.981P.RER

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SOUL Race Exhaust System. 

The SOUL Performance Race Exhaust System is a premium aftermarket motorsport exhaust developed specifically for the Porsche 981 Cayman GT4 and Boxster Spyder 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 exhaust replaces the original rear exhaust assembly with a lightweight, high-flow stainless steel system engineered for demanding circuit driving and motorsport applications.

Unlike conventional sports exhaust systems, which balance performance, refinement and everyday comfort, the SOUL Race Exhaust is developed primarily to deliver maximum durability, reduced weight, efficient exhaust flow and a highly aggressive engine soundtrack.

The system uses 2.5-inch diameter T304L stainless steel tubing, manufactured with precision mandrel bends to maintain a consistent flow path through the exhaust system.

The tubing has a 0.065-inch wall thickness, providing a balance of strength, durability and lightweight construction.

Each system is manufactured in-house at SOUL Performance's Willow Grove, Pennsylvania facility, where the components are carefully fabricated and inspected.

The stainless steel brackets are laser-cut, press-brake formed and TIG-welded for strength, while the exhaust welds are back-purged to support long-term durability under demanding conditions.

One of the system's most distinctive features is its specially developed mounting arrangement.

Instead of relying exclusively on conventional exhaust hangers welded directly to the pipework, SOUL uses a bespoke transmission mounting brace, heavy-duty Mikalor band clamps and additional rubber vibration dampeners.

This construction is designed to reduce stress caused by engine movement, exhaust vibration and repeated thermal expansion.

SOUL states that its mounting arrangement saves over 5 lb (approximately 2.3 kg) compared with the original factory exhaust mounts.

The over-axle pipe geometry is also designed to provide sufficient clearance around the rear axles and anti-roll bar drop links, including on vehicles with lowered or modified suspension.

This is particularly relevant to track-prepared Porsche GT4 models, where aftermarket suspension setups may reduce available exhaust clearance.

The system is compatible with the original factory headers and SOUL Performance headers.

Compatibility with exhaust headers produced by other manufacturers must be checked carefully because dimensional differences may affect over-axle pipe clearance.

The SOUL Race Exhaust produces an exceptionally loud and aggressive exhaust note, emphasising the distinctive character of the Porsche naturally aspirated flat-six engine.

Its reduced sound attenuation produces a much more direct exhaust experience than the manufacturer's Performance Exhaust or Valved Exhaust systems.

SOUL explicitly states that exhaust drone will be present, even when resonators are used.

For this reason, the Race Exhaust is best suited to dedicated circuit cars, competition vehicles and other legally permitted off-road applications rather than everyday road use.

The exhaust is designed for direct bolt-on installation on compatible vehicles and includes new high-grade hardware for the header-to-exhaust flange connections.

Each assembly undergoes quality checks and fixture testing before dispatch.

Backed by SOUL Performance's lifetime warranty, subject to the manufacturer's terms, the Race Exhaust System provides a purpose-built solution for Porsche enthusiasts seeking reduced mounting weight, motorsport durability and an exceptionally aggressive flat-six soundtrack.

What This Product Does:
The SOUL Race Exhaust System directs spent combustion gases away from the engine's upstream exhaust components and through the rear exhaust outlets.

After combustion, exhaust gases leave the engine through the exhaust manifolds and associated catalytic converter assemblies, where fitted.

The gases then pass through the over-axle exhaust pipes and towards the rear outlets.

The SOUL Race Exhaust provides a performance-focused alternative to the original rear silencer arrangement.

Its main functions include:

• Directing exhaust gases: Carries combustion gases from the upstream exhaust system towards the rear outlets.
• Supporting efficient exhaust flow: Uses mandrel-bent stainless steel tubing with a 2.5-inch diameter.
• Reducing unnecessary restriction: Employs a race-focused flow path rather than a heavily silenced factory-style rear exhaust.
• Enhancing engine sound: Produces a substantially louder and more aggressive naturally aspirated flat-six soundtrack.
• Reducing mounting weight: Uses a bespoke mounting system that saves over 5 lb compared with the factory mounts.
• Supporting motorsport durability: Incorporates reinforced mounting components developed for demanding circuit operation.
• Reducing mounting stress: Uses heavy-duty clamps and rubber vibration dampeners to manage vibration and movement.
• Maintaining suspension clearance: Features over-axle pipework shaped to clear the axles and anti-roll bar drop links.
• Accommodating modified suspension: Provides pipe profiles developed with lowered and track-prepared vehicles in mind.
• Supporting repairability: Uses mounting components designed to be serviced or replaced after motorsport incidents.
• Providing corrosion resistance: Uses T304L stainless steel for repeated exposure to heat and environmental conditions.
• Maintaining compatible header connections: Connects to the original Porsche or suitable SOUL Performance exhaust headers.

Exhaust Sound Characteristics:
The SOUL Race Exhaust is designed for drivers who want an exceptionally loud and aggressive exhaust note.

It provides a much less attenuated soundtrack than the original Porsche rear exhaust.

Depending on the engine speed, upstream exhaust configuration and driving conditions, drivers may notice:

• A noticeably louder exhaust tone at idle.
• A very aggressive exhaust note during acceleration.
• Increased flat-six sound intensity at higher engine speeds.
• Stronger exhaust presence during gear changes and downshifts.
• Pronounced exhaust character during high-load circuit driving.
• Increased cabin resonance.
• Noticeable low-frequency exhaust drone.
• A more direct motorsport-style exhaust soundtrack.

Why Upgrading Matters:
1. Motorsport-Focused Construction

The Race Exhaust is designed specifically for demanding track applications.

Its reinforced components and specialised mounting arrangement are intended to withstand the stresses associated with aggressive circuit driving.

2. Reduced Exhaust Restriction

The system uses mandrel-bent 2.5-inch exhaust tubing and a freer-flowing rear exhaust arrangement.

This supports efficient movement of exhaust gases through the system.

However, specific horsepower or torque gains for this exhaust alone have not been independently confirmed.

3. Reduced Mounting Weight

SOUL states that its bespoke mounting arrangement saves more than 5 lb compared with the original factory mounts.

This contributes to the weight-saving design of the system.

4. Improved Exhaust Support

Heavy-duty Mikalor clamps and additional rubber vibration dampeners are designed to reduce excessive stress on the pipework.

This can be particularly valuable in vehicles subjected to repeated high-load driving and vibration.

5. Improved Clearance for Lowered Vehicles

The over-axle pipe geometry is developed to provide clearance around the rear axles and anti-roll bar drop links.

This makes the system relevant to GT4 models fitted with modified or lowered suspension.

Final clearance must still be checked during installation.

6. Highly Aggressive Flat-Six Sound

The system is designed to deliver a strong, intense and unmistakably motorsport-inspired exhaust note.

It is suitable for drivers who prioritise exhaust character over quiet cruising.

7. Durable Stainless Steel Construction

The T304L stainless steel tubing offers corrosion resistance and durability under repeated thermal cycling.

The system also incorporates high-quality TIG welding and back-purged weld construction.

8. Improved Repairability

The specialised mounting components are designed to be more straightforward to repair or replace after a track incident than conventional fixed hanger arrangements.

9. Compatibility with Factory or SOUL Headers

The system is designed to connect to the factory headers or SOUL Performance headers.

Compatibility with other aftermarket header systems should not be assumed.

10. Direct Bolt-On Installation

SOUL Performance fixture-tests the exhaust assemblies for fitment and includes installation instructions.

New high-grade hardware is supplied for the header-to-exhaust flanges.

11. Manufacturer Lifetime Warranty

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

Related reference numbers
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POR.GT4M.RER.

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Porsche 986 Boxster SOUL Spec Race Exhaust

Unlock the full potential of your 986 Spec Boxster with a race-bred exhaust engineered for maximum durability, reduced weight, and proven performance. Designed specifically for competition use, this system delivers the strength and sound demanded on track while shedding significant weight over factory components.

•  Fits Porsche 986 Boxster Base vehicles with 5-speed manual transmission (1997-2004)
•  Weight savings: 24.8 lbs / 11.2 kg lighter than stock (14.7 lbs vs. 39.5 lbs)
•  Precision-built in-house at SOUL’s Willow Grove, PA facility
•  Backed by SOUL Performance Products’ Lifetime Warranty for both street and track use

DEVELOPMENT:
Several Spec racing teams and shops including our development partner, Brandywine Motorwerks, have been seeking an exhaust solution that is durable enough for racing use as existing systems on the market and DIY solutions have been known to fail. We set out to build the most durable system possible while being cost effective and minding weight. A lack of resonance damping in a 986 exhaust system for competition use can cause metal fatigue in the factory headers, resulting in cracking. We crafted bespoke, adjustable brackets to mount the exhaust to the transmission to match movement of the drivetrain to the exhaust opposed to hard mounting to the body. Silicone dampers are also included as part of the brackets to help absorb vibrations. Clamps are not welded to the piping to prevent fatigue and provide easy / efficient replacement – the only welds in the entire system are in the flanges to the headers and every weld is back purged for maximum weld strength and durability. The brackets are adjustable for the best possible fitment and the rear pipes are easily replaced in the event of collision damage. 2″ straight piping keeps exhaust velocity high and weight down. Sound attenuating components like resonators are decidedly absent to reduce weight and complexity as PCA Club Races are not hosted on sound limited days. Should decibel limits be considered for other competition series or HPDE events on sound restricted tracks, alternative solutions can be used. The end result is a race bred system that will hold up to the stresses of racing and last until you podium – and beyond.  

CONSTRUCTION:
Each system is made in-house by our fabrication team from mandrel bent .065″ wall, 2″ diameter T304L stainless steel tubing and laser cut brackets. All welds are back purged for increased longevity under the most extreme conditions.

BOLT ON AND GO:
Each exhaust component is rigorously quality-checked, tested in a fixture to ensure perfect fitment, and then foam packed to ensure it arrives in perfect condition. New high grade hardware is included.

CHECK ENGINE LIGHT?:
This race exhaust will trigger a check engine light due to removal of factory catalytic converters and deletion of the secondary o2 sensors. If this is bothersome, some race shops servicing SPB cars recommend turning off the CEL via removal of the CEL bulb.

LIFETIME WARRANTY:
 Enjoy your SOUL exhaust components with confidence on both the street and track as they are covered by our Lifetime Warranty! Our team will quickly work with you to resolve any issues or answer any questions that you may have.

NOTE + This exhaust is not CARB certified and may not be legal for use on emissions controlled vehicles; intended for closed course competition use only.

Please note: This item is not a stock product. It is a special order part and once ordered with us is not subject to cancellation or return unless proven not fit for purpose or defected.

Related reference numbers
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POR.986.RE

The product you are viewing cross references to these numbers

Porsche 981 Boxster / 981C Cayman  SOUL Street Exhaust Package

Experience the perfect balance of refinement and excitement with the SOUL Street Package for Porsche 981 Boxster and Cayman models. This system pairs SOUL Valved Exhaust with Long Tube Street Headers, delivering noticeable power gains, sharper throttle response, and a soundtrack that adapts to your driving mood—all without triggering a check engine light. With valves closed, the system offers a smooth, drone-free tone ideal for daily driving. Open the valves, and the flat-six unleashes its full roar through a straight-through flow path, exiting via exhaust tips in the style and finish of your choice. Built around large-diameter runners and high-flow catalytic converters, the headers maximize flow while enhancing that signature Porsche sound. Every system is backed by our industry-leading Lifetime Warranty, giving you confidence both on the street and at the track.

Package Includes:
•   SOUL Performance Products 981 Cayman Valved Exhaust System
•   SOUL Performance Products 981 Cayman Long Tube Street Headers

•   Fits all Porsche 981 Boxster / Cayman models (2013–2016)
•   Increased performance and sound with no check engine light
•   Direct bolt-on installation with included instructions
•   Multiple tip styles and finishes available – custom options too
•   Covered by SOUL’s Lifetime Warranty for street and track use

DEVELOPMENT:
For the 981 platform, we engineered a system with properly sized 2” runners and optimized collectors to unlock maximum power from the 3.4L engine, while still delivering impressive gains on the 2.7L. We selected high-flow catalytic converters sized for both performance and durability—avoiding the compromises of smaller, cheaper alternatives. The result is a superior exhaust that delivers a broad spectrum of sound: valves open reveal a CUP car–inspired roar, while valves closed provide a refined, drone-free tone. Thanks to SOUL mufflers, even with aftermarket headers the exhaust remains composed and reserved when the valves are shut.

CONSTRUCTION:
Our headers are precision-engineered and crafted from T304L stainless steel for strength and performance. Featuring port-matched flanges, smooth-radius primary tubing, and optimized collectors, they deliver maximum exhaust flow and power gains. Each system is mandrel-bent, fitted with reinforced muffler casings for durability, and rigorously quality-checked before shipping to ensure the highest standards.
  
TIPS:
Choose from several different tip styles and finishes – from single wall 321 stainless tips to double wall chrome tips. Logo customization and custom tip colours are available by request. Titanium single wall tips are also available and save nearly a pound of weight over stainless steel tips!

BOLT ON AND GO:
Each exhaust is rigorously quality-checked, tested in a fixture to guarantee fitment, and then foam packed to ensure it arrives in perfect condition. Thorough installation instructions are included in the box for a straightforward install that can be performed by most DIY enthusiasts.

LIFETIME WARRANTY:
Enjoy your SOUL exhaust components with confidence on both the street and track as they are covered by our Lifetime Warranty! Our team will quickly work with you to resolve any issues or answer any questions that you may have.

Please note: This item is not a stock product. It is a special order part and once ordered with us is not subject to cancellation or return unless proven not fit for purpose or defected.

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

POR.981.STPKG

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Porsche 986 Boxster 2000-2004 SOUL Street Exhaust Package

The SOUL 986 Street Exhaust Package upgrades your factory system with a precision-engineered header and exhaust setup that boosts power while delivering an aggressive yet refined Porsche sound. Premium high-flow catalytic converters ensure clean performance without triggering check engine lights.

•  Compatible with all Porsche 986 Boxster models (2000–2004)
•  Backed by SOUL Performance Products’ Lifetime Warranty for both street and track use

DEVELOPMENT:
The Porsche 986 Boxster offers excellent performance potential but suffers from a restrictive factory exhaust. The stock headers use oversized catalytic converters, thin flanges, and crushed primary tubing that limit flow, while the OEM exhaust adds a secondary set of converters that further choke power. The SOUL 986 Street Exhaust Package addresses all of these weak points with a complete header and cat-back system engineered to work in harmony. Designed for performance and sound balance, the system boosts excitement without introducing unwanted drone—SOUL mufflers keep the tone refined during partial throttle, even when paired with aftermarket catless headers. No valves are needed; the result is a system that’s loud when you want it to be, yet comfortably reserved around town.

CONSTRUCTION:
Our headers are crafted from premium T304L stainless steel and engineered for maximum performance. With port-matched flanges, smooth-radius primary tubing, and optimized collectors, they deliver improved exhaust flow and noticeable power gains. Each set is mandrel-bent, rigorously inspected, and fitted with mufflers featuring reinforced casings for long-lasting durability. Merge spikes further enhance flow efficiency at the collector, while a range of 321 stainless steel tip styles and finishes—or fully customized options—let you tailor the perfect look for your Porsche.

BOLT ON AND GO:
Every exhaust component undergoes strict quality checks and is test-fitted in a fixture to guarantee precise alignment. Each system is foam-packed for safe delivery and comes complete with new high-grade hardware for the header-to-exhaust flanges. Detailed installation instructions are also included for a smooth, hassle-free setup.

LIFETIME WARRANTY:
Enjoy your SOUL exhaust components with confidence on both the street and track as they are covered by our Lifetime Warranty! Our team will quickly work with you to resolve any issues or answer any questions that you may have.

NOTE:
+ This package is not CARB certified and may not be legal for use on emissions controlled vehicles; intended for closed course competition use only
+ Trimming of the inner fender liner and exhaust heat shield is required on all vehicles and headlight auto leveling sensor may need to be disabled / removed and rerouting of brake hard line may be necessary to protect from heat – as such we recommend professional installation. Contact us if you need a dealer / installer recommendation.

Please note: This item is not a stock product. It is a special order part and once ordered with us is not subject to cancellation or return unless proven not fit for purpose or defected.

Related reference numbers
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POR.9862.STPKG

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Porsche 981 Boxster / 981C Cayman SOUL Valved Exhaust System

The factory exhaust system on the Porsche 981 Cayman and Boxster is bulky and restrictive, muting both performance and sound. The SOUL Valved Exhaust System is designed to free the car’s natural character by reducing weight and incorporating a precision valve system that delivers a dramatic transformation in responsiveness, tone, and driving enjoyment.
With the valves closed, the system produces a refined, sporty exhaust note with zero drone—perfect for comfortable daily driving and discreet neighborhood entries. Open the valves, and the flat-six engine comes alive with an intoxicating motorsport-inspired soundtrack, ideal for spirited back-road drives or track sessions.

•   Fits all Porsche 981 Boxster / Cayman models (2013–2016)
•   Direct bolt-on installation with included instructions
•   Choice of multiple exhaust tip styles and finishes—or customize your own

•    Valve controller kit included – necessary for cars without PSE and optional for cars with PSE to provide manual valve override
•   Covered by SOUL’s Lifetime Warranty for street and track use

DEWELOPMENT:
We wanted to be certain that our system offered a superior spectrum of sound – Cup car inspired with valves open but with a refined, no droning tone with valves closed. The SOUL mufflers practically eliminate droning – even with aftermarket headers the sound is reserved in the cabin with valves closed!

CONSTRUCTION:
Each system is constructed from mandrel-bent T304L stainless steel tubing, featuring 2.5″ over-axle pipes, and equipped with mufflers built with reinforced casings for long-term durability.
•  With the valves closed, exhaust gases are directed through SOUL’s high-quality mufflers, packed with premium sound-absorbing material engineered to withstand heavy use without breaking down. These mufflers are highly effective at eliminating drone, channeling gases through perforations into the outer piping for a smooth, refined tone.
•  Open the valves, and exhaust gases flow freely through the large 2.5″ straight-through piping, while the perforations allow the exhaust to interact with the muffler—producing a deeper, fuller, and more aggressive sound that captures the true character of the flat-six engine.

TIPS:
Choose from a variety of tip styles and finishes, ranging from sleek single-wall 321 stainless steel to premium double-wall chrome. For a personalized touch, logo engraving and custom tip colors are available upon request. For those seeking performance benefits, lightweight titanium single-wall tips are also offered—shedding nearly a pound compared to stainless steel options.

BOLT ON AND GO:
Each exhaust system undergoes rigorous quality checks and fixture testing to guarantee precise fitment. Every kit includes detailed installation instructions, making the process straightforward for most DIY enthusiasts. Valve operation integrates seamlessly—controlled via the factory PSE button, included valve controller fobs, and even compatible with HomeLink for added convenience.

LIFETIME WARRANTY:
Enjoy your SOUL exhaust components with confidence on both the street and track as they are covered by our Lifetime Warranty! Our team will quickly work with you to resolve any questions or issues that you may have.

Please note: This item is not a stock product. It is a special order part and once ordered with us is not subject to cancellation or return unless proven not fit for purpose or defected.

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

POR.981.VES

The product you are viewing cross references to these numbers

SOUL Valved Exhaust System.

The SOUL Performance Valved Exhaust System is a high-quality 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 3.8L flat-six engine, this performance exhaust replaces the original rear silencer assembly with a stainless steel system incorporating specially developed mufflers, electronically controlled exhaust valves and a selection of premium exhaust tips.

The Porsche 981 GT4 and Boxster Spyder are renowned for their distinctive engine character, high-revving performance and engaging driving experience.

SOUL Performance has engineered this exhaust system to enhance those qualities while maintaining the flexibility required for both everyday driving and more enthusiastic use.

Unlike a permanently loud aftermarket exhaust, the SOUL Valved Exhaust System provides two selectable sound characteristics.

With the exhaust valves closed, gases are directed through the integrated SOUL mufflers, which contain high-quality sound-absorbing material.

This arrangement produces a deeper, refined exhaust tone while minimising unwanted cabin drone during steady motorway driving.

With the exhaust valves open, the exhaust gases can flow through a more direct 2.5-inch exhaust path, producing a louder, more aggressive exhaust note.

The open-valve arrangement highlights the characteristic sound of the Porsche flat-six engine, particularly during acceleration, high-RPM operation and downshifts.

Manufactured from mandrel-bent T304L stainless steel, the system is designed to provide durability, corrosion resistance and consistent exhaust flow.

The over-axle pipes feature a 2.5-inch outside diameter, while the reinforced muffler casings are designed to withstand repeated heating and cooling cycles.

The system also incorporates carefully positioned perforations that allow exhaust pulses to interact with the mufflers even when the valves are open, encouraging a fuller and more rounded exhaust tone.

A selection of exhaust tip styles and finishes allows owners to customise the rear appearance of their Porsche.

Available manufacturer options include 321 stainless steel exhaust tips and lightweight single-wall titanium tips.

The system is designed to work with the Porsche factory exhaust valve controls, allowing the driver to retain familiar operation through the original exhaust button.

SOUL also identifies compatibility with its optional remote valve controllers and HomeLink-based control arrangements.

Each exhaust system is fixture-tested before dispatch and supplied with installation instructions for a direct bolt-on installation on compatible vehicles.

Backed by SOUL Performance's lifetime warranty, subject to the manufacturer's terms, this valved exhaust is an attractive upgrade for owners looking to improve the sound, character and appearance of their Porsche without permanently sacrificing cruising refinement.

What This Product Does:
The SOUL Performance Valved Exhaust System manages the flow of exhaust gases through the rear exhaust assembly while allowing the driver to select between two distinct exhaust sound characteristics.

Exhaust gases leave the engine through the exhaust manifolds and catalytic converter assemblies before travelling through the rear exhaust system.

The SOUL system receives these gases through its over-axle pipes and directs them towards the exhaust outlets.

The electronically operated exhaust valves determine whether the gases pass predominantly through the sound-absorbing mufflers or follow the more direct exhaust path.

Its primary functions include:

• Directing exhaust gases: Carries spent gases from the upstream exhaust components towards the rear outlets.
• Providing selectable exhaust sound: Allows quieter and louder operating modes.
• Reducing motorway drone: Uses dedicated muffler construction to minimise unwanted low-frequency resonance.
• Enhancing engine sound: Produces a deeper and more pronounced naturally aspirated flat-six soundtrack.
• Supporting efficient exhaust flow: Uses mandrel-bent tubing and a more direct flow path with the valves open.
• Maintaining driver control: Integrates with the factory exhaust valve control system.
• Supporting everyday comfort: Offers a more restrained exhaust character with the valves closed.
• Enhancing spirited driving: Provides a stronger exhaust note during acceleration and downshifts.
• Improving rear-end appearance: Incorporates a choice of premium exhaust tip styles and finishes.
• Providing durable construction: Uses stainless steel components designed for demanding exhaust temperatures.
• Supporting compatible performance upgrades: Can be paired with appropriate factory or aftermarket header configurations.
• Maintaining a factory-style installation: Uses mounting and connection arrangements intended for compatible vehicles.

How Do The Exhaust Valves Work:

Valves Closed – Refined Touring Sound

When the valves are closed, exhaust gases are directed through the SOUL mufflers.

The mufflers contain durable sound-absorbing material designed to reduce unwanted resonance while maintaining a sporting exhaust note.

This setting is intended for normal road driving, longer journeys and situations where a more restrained exhaust sound is preferred.

Benefits include:

• A deeper but more controlled exhaust note.
• Reduced low-frequency cabin resonance.
• Improved cruising refinement compared with an unrestricted exhaust.
• A sporting sound without permanently operating at maximum volume.
• Convenient operation using the existing exhaust controls.

SOUL states that its system is designed to avoid unwanted motorway drone when paired with factory headers or appropriate high-flow catted headers.

Valves Open – Enhanced Performance Sound

With the valves open, exhaust gases can travel through the larger, more direct 2.5-inch piping.

This reduces the amount of sound attenuation compared with the closed-valve arrangement.

The result is a stronger exhaust sound that becomes particularly noticeable during acceleration and higher engine speeds.

Benefits include:

• A louder and more aggressive flat-six exhaust note.
• Greater exhaust character during acceleration.
• A more pronounced sound during downshifts.
• A fuller tone from the specially designed muffler and pipe arrangement.
• A more engaging driving experience.       

Why Upgrading Matters:
The SOUL Performance Valved Exhaust System is designed for drivers who want a more engaging exhaust note without permanently compromising daily driving comfort.

It combines performance-oriented construction with the convenience of selectable exhaust sound.

1. Enhanced Flat-Six Sound

• The 3.8L naturally aspirated engine fitted to the Porsche 981 GT4 and Boxster Spyder produces a distinctive high-revving exhaust note.
• The SOUL system is designed to amplify and refine this sound, producing a deeper tone with the valves closed and a more aggressive character with the valves open.

2. Selectable Exhaust Volume

• The electronic valve arrangement allows the driver to choose between two different exhaust modes.
• This makes the system suitable for owners who want a more pronounced sound during spirited driving but prefer a quieter exhaust on longer journeys.

3. Reduced Unwanted Drone

• The SOUL mufflers use sound-absorbing materials and a carefully developed internal design to minimise unwanted resonance.
• This is particularly valuable during steady motorway driving, where permanently loud exhaust systems can become tiring.

4. Improved Exhaust Flow Potential

• The system uses mandrel-bent stainless steel tubing and a more direct exhaust path when the valves are open.
• This arrangement is designed to support efficient exhaust gas movement.
• It may complement other performance upgrades, but specific horsepower and torque gains have not been verified for this exhaust system alone.

5. Factory Exhaust Valve Control Compatibility

• The system is compatible with the original Porsche exhaust valve controls.
• Drivers can retain the familiar exhaust control operation rather than relying on a completely separate system.
• Optional SOUL valve-control solutions may offer additional operating flexibility.

6. Durable Stainless Steel Construction

• The T304L stainless steel exhaust tubing and reinforced muffler casings are designed to withstand high temperatures, vibration and repeated thermal cycles.
• The use of corrosion-resistant materials makes the system suitable for long-term enthusiast use.

7. Premium Exhaust Tip Options

• A choice of stainless steel and titanium exhaust tips allows owners to customise the vehicle's rear appearance.
• Titanium single-wall tips offer a lightweight alternative to stainless steel.

8. Direct Bolt-On Installation

• The system is designed as a direct replacement for the compatible factory rear exhaust.
• SOUL fixture-tests its exhaust assemblies and supplies installation instructions.

9. Retention of the Upstream Exhaust System

• This is a rear exhaust upgrade rather than a complete exhaust manifold and catalytic converter replacement.
• Compatible original headers and catalytic converters can remain installed.

10. Manufacturer's Lifetime Warranty

• SOUL Performance backs the system with its lifetime warranty for street and track use, subject to the published warranty conditions.

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POR.GT4.VES.

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