Switchable Silencers / Mufflers

DesignTek Valvetronic sports exhaust system gives smooth 12Bhp/15 ft-lbs of torque to the wheels with the valves opened, +8HP/10 ft-lbs of torque to the wheels with the valves closed. Made from high quality 14-16 gauge T304 stainless steel, hydro-formed muffler cases, radiuses stressed relieved with 2000 degree ceramic fiber and stainless steel wool packed free flow mufflers.

This unique exhaust configures a dual-tone setup controlled by a key fob which you can switch on the fly. Direct replacement for the factory mufflers and will work with the stock primary pipe and cats or DesignTek primary bypass pipe.

High-Performance Rear Exhaust with sound switch:
● Push the sound-button between:
Switch closed: Deep Sports Turbo Sound

Switch opened: Perfect Racing Sports Sound

Superb sports car sound, throaty and deep with the valves opened, but docile with the valves closed.

This system comes complete with stainless steel tail pipes.

Please note the remote controllers do not come with batteries. You will have to source them at your own cost. The type is CR2025

For Wiring Diagram please CLICK HERE




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Related, superseded, cross reference or alternative numbers for comparison.

3606008705

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SOUL Valved Exhaust System.

The SOUL Performance Valved Exhaust System is a high-quality aftermarket sports exhaust upgrade specifically 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  

Developed for Porsche's naturally aspirated flat-six engines, this exhaust system replaces the original rear exhaust assembly with a lighter, freer-flowing stainless steel system incorporating performance silencers, vacuum-operated exhaust valves, an X-pipe outlet and premium exhaust tips.

The Porsche 987.2 Boxster and Cayman are known for their responsive engines, balanced chassis and distinctive flat-six engine sound.

SOUL Performance developed this valved exhaust to enhance the driving experience by providing a deeper, fuller exhaust note while retaining the flexibility to switch between refined and aggressive sound characteristics.

Unlike a conventional non-valved sports exhaust, the SOUL system features two distinct operating modes.

With the exhaust valves closed, exhaust gases are directed through specially developed silencers containing high-quality sound-absorbing material. This produces a more controlled exhaust tone and is designed to minimise unwanted cabin drone, particularly during steady motorway driving.

With the valves open, exhaust gases follow a more direct route through the 2.5-inch pipework, producing a noticeably louder and more aggressive flat-six soundtrack.

The system incorporates perforated passages that allow exhaust pulses to interact with the silencers, helping create a fuller and more rounded sound even when the valves are open.

Manufactured from mandrel-bent T304L stainless steel, the exhaust is designed for durability, corrosion resistance and efficient exhaust gas flow.

The reinforced silencer casings and strengthened mounting brackets are engineered to withstand repeated thermal cycles, exhaust vibration and demanding driving conditions.

SOUL Performance states that its exhaust weighs approximately 30 lb, compared with 35 lb for the equivalent factory exhaust components, providing a weight saving of approximately 5 lb (2.2 kg).

A key advantage is its compatibility with vehicles both with and without factory Porsche Sport Exhaust (PSE).

On PSE-equipped vehicles, the SOUL exhaust can use the existing factory exhaust valve control arrangement.

For vehicles without PSE, SOUL includes a valve controller kit that allows the driver to operate the exhaust valves using a remote control.

The controller kit can also be installed on PSE-equipped vehicles to provide manual valve override.

A variety of premium exhaust tip styles and finishes allows owners to personalise the rear appearance of their Porsche.

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

Each system is quality-checked and fixture-tested before dispatch to ensure consistent installation fitment.

Designed as a direct bolt-on replacement for the compatible original rear exhaust, the kit includes installation instructions and specified mounting hardware.

Backed by SOUL Performance's lifetime warranty, subject to the manufacturer's terms, this Valved Exhaust System is an ideal upgrade for Porsche owners seeking improved exhaust sound, selectable driving characteristics, reduced weight and durable stainless steel construction.

What This Product Does:
The SOUL Performance Valved Exhaust System directs combustion gases through the rear exhaust while allowing the driver to change the exhaust gas flow path and resulting sound.

During engine operation, exhaust gases leave the cylinder heads, pass through the exhaust manifolds and catalytic converters, and enter the rear exhaust system.

The SOUL exhaust then routes these gases through its stainless steel pipework and silencers before they exit through the rear exhaust tips.

The position of the exhaust valves determines the path taken by the gases.

Its main functions include:

• Directing exhaust gases: Carries combustion gases from the upstream exhaust components to the rear outlets.
• Providing selectable exhaust sound: Allows quieter and louder exhaust characteristics.
• Reducing unwanted drone: Uses sound-absorbing silencers to minimise low-frequency cabin resonance.
• Enhancing engine sound: Produces a deeper and more aggressive flat-six exhaust note.
• Supporting efficient exhaust flow: Uses mandrel-bent stainless steel tubing and a more direct open-valve flow path.
• Maintaining driver control: Allows the exhaust sound to be selected using the appropriate factory or supplied controller.
• Improving cruising refinement: Provides a quieter exhaust configuration for steady driving.
• Enhancing spirited driving: Delivers a stronger exhaust note during acceleration and high-RPM operation.
• Reducing exhaust weight: Offers a manufacturer-reported 5 lb saving over the original components.
• Maintaining durable construction: Uses corrosion-resistant stainless steel and reinforced mounting components.
• Enhancing rear-end styling: Offers different exhaust tip materials, styles and finishes.
• Supporting performance upgrades: Can complement compatible aftermarket exhaust headers.

Why Upgrading Matters:

1. Enhanced Flat-Six Exhaust Sound

The SOUL exhaust is designed to bring out more of the naturally aspirated Porsche engine's characteristic sound.

Drivers can enjoy a fuller and more aggressive exhaust note without permanently operating at maximum volume.

2. Selectable Exhaust Characteristics

The valved arrangement provides two different sound modes.

This makes the system more versatile than a permanently loud, non-valved exhaust.

3. Reduced Motorway Drone

The specially designed silencers help minimise unwanted low-frequency resonance.

SOUL specifically reports drone-free closed-valve motorway operation when combined with the original factory headers.

4. Improved Exhaust Flow Potential

The system uses mandrel-bent 2.5-inch over-axle pipework and a more direct exhaust path when the valves are open.

This is intended to support efficient exhaust gas movement.

5. Manufacturer-Reported Performance Improvements

SOUL Performance reports Dynojet testing on a Porsche 987.2 Cayman S fitted with its Valved Exhaust System and Long Tube Street Headers.

The manufacturer recorded maximum improvements of approximately:

8 wheel horsepower. 11 lb-ft of torque.

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

Important: These figures should not be presented as guaranteed gains from the Valved Exhaust System alone.

6. Reduced Exhaust Weight

SOUL states that its Valved Exhaust System weighs approximately 30 lb compared with 35 lb for the factory components.

This represents a saving of approximately 5 lb (2.2 kg).

7. Compatibility with Factory PSE

Vehicles already equipped with Porsche Sport Exhaust can retain compatible factory-style valve operation.

The supplied SOUL controller can also offer manual override.

8. Valve Control for Non-PSE Vehicles

Vehicles without factory PSE can gain selectable exhaust sound using the supplied SOUL valve controller kit.

This is particularly useful for owners who want the versatility of a valved exhaust without an original factory PSE system.

9. Durable Stainless Steel Construction

The T304L stainless steel tubing offers corrosion resistance and durability under demanding exhaust operating temperatures.

10. Reinforced Exhaust Mounting

SOUL incorporates strengthened brackets and reinforced silencer casings.

These are designed to withstand repeated vibration and thermal cycling during road and track driving.

11. Premium Exhaust Tip Options

Owners can select different stainless steel and titanium exhaust tip styles.

This allows the rear appearance of the vehicle to be personalised.

12. Direct Bolt-On Installation

The system is designed for the original compatible mounting arrangement.

SOUL fixture-tests each exhaust and supplies the relevant installation instructions and hardware.

13. Manufacturer Lifetime Warranty

The exhaust components are covered by SOUL Performance's lifetime warranty for street and track use, subject to its published terms.

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

POR.9872.VES.

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Switch set for sound valves.

Fits:
All Porsche models with vacuum operated valvetronic exhaust systems

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

9996001111

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Ninemeister 9m Sports Valved Stainless Steel Silencer

Transform the sound and character of your Porsche with the Ninemeister 9m Sports Valved Stainless Steel Silencer. This premium performance exhaust system allows you to choose between refined everyday driving and an exhilarating sports exhaust note at the touch of a button, giving you complete control over your driving experience.

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

Manufactured from premium 304-grade stainless steel using precision welding techniques, the Ninemeister 9m valved silencer combines exceptional durability, OE-quality fitment and a lifetime guarantee. Featuring an efficient X-pipe design, it improves exhaust gas flow, enhances throttle response and produces a deeper, richer sports car soundtrack without compromising everyday drivability.

Designed as a true direct replacement for the factory muffler, installation requires no cutting, welding or permanent modifications, making it an ideal upgrade for owners looking to improve both sound and performance while retaining factory reliability.

Available with a choice of black or polished silver exhaust tips, allowing you to tailor the appearance of your Porsche to suit your personal style.

What Does the Ninemeister Sports Valved Silencer Do?

The Ninemeister valved silencer replaces the restrictive factory rear muffler with a high-flow stainless steel performance exhaust system featuring an integrated exhaust valve.

At the touch of a button you can select between:

• Refined, quieter driving for everyday use.
• A deeper, more aggressive sports exhaust note.
• Enhanced engine character throughout the rev range.
• Improved throttle response.
• Freer flowing exhaust gas delivery.
• A more engaging Porsche driving experience.

The integrated X-pipe balances exhaust pulses between both cylinder banks, producing a smoother exhaust flow and a more distinctive flat-six soundtrack.

Why Upgrade to the Ninemeister Sports Valved Silencer?

The standard Porsche exhaust is designed to satisfy global noise regulations and broad customer requirements. While refined, many enthusiasts prefer a more engaging soundtrack and improved engine response.

Upgrading offers numerous benefits including:

• Switchable exhaust sound at the push of a button.
• Richer flat-six exhaust note.
• Improved throttle response.
• Reduced exhaust restriction.
• Premium 304 stainless steel construction.
• Lifetime guarantee.
• Direct bolt-on installation.
• No cutting or welding required.
• Maintains emissions compliance.
• Does not trigger the Check Engine Light.
• Choice of black or polished silver tailpipes.
• OE-quality fit and finish.

It is the ideal upgrade for drivers wanting increased character without sacrificing everyday usability.

Performance Benefits

The Ninemeister 9m valved exhaust provides:

• Noticeably improved sports car sound.
• Faster engine response.
• Improved exhaust gas scavenging via the X-pipe design.
• Reduced exhaust back pressure.
• Smooth power delivery.
• Enhanced driver engagement.
• Factory-style fitment and reliability.

The result is a more exciting Porsche that remains perfectly suited to everyday road driving.

Premium Construction

Every Ninemeister silencer features:

• Precision welded 304-grade stainless steel.
• Corrosion-resistant construction.
• High-quality internal valving mechanism.
• OE-quality mounting points.
• Lifetime guarantee.
• Direct replacement design.
• Choice of black or polished silver exhaust tips.

Designed to provide years of reliable performance in all driving conditions.

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

9M98711351131

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