Porsche 991.1 / 991.2 GT3 / GT3 RS / 911R SOUL Modular Competition Exhaust Package

Product Description

The SOUL Modular Competition Exhaust Package is a complete, highly configurable muffler-delete solution for Porsche 991.1 and 991.2 GT3 / GT3 RS models and the 911R, combining SOUL's Side Muffler Bypass Pipes, Center Muffler Bypass Exhaust, and purpose-built support brackets into one lightweight package.

Rather than locking the car into a single exhaust configuration, SOUL designed the system to be modular. Owners can run the complete Competition configuration with both the center and side mufflers removed, reinstall the factory center muffler while retaining SOUL's Side Muffler Bypass Pipes, or reinstall the factory side mufflers while using only the SOUL Center Muffler Bypass.

The complete package removes approximately 46 lbs in the valved configuration or approximately 49 lbs in the non-valved configuration, substantially reducing mass and heat at the extreme rear of the vehicle.

The Valved configuration retains factory Porsche exhaust-valve control for meaningful sound adjustment, while the Non-Valved configuration prioritizes minimum weight, simplicity, and consistent aggressive exhaust character.

FITMENT:

• Fits 2014–2016 Porsche 991.1 911 GT3

• Fits 2016 Porsche 991.1 911 GT3 RS

• Fits 2016 Porsche 911R

• Fits 2018–2019 Porsche 991.2 911 GT3

• Fits 2018–2019 Porsche 991.2 911 GT3 with Touring Package

• Fits 2019 Porsche 991.2 911 GT3 RS

• SOUL specifies fitment for all 991.1 / 991.2 GT3 and GT3 RS models including the 911R from 2014–2019

• Compatible with factory headers and catalytic converters

• Compatible with applicable SOUL Street Headers

• Compatible with SOUL Competition Headers

• Available in Valved and Non-Valved configurations

PACKAGE INCLUDES:

• SOUL Center Muffler Bypass Exhaust

• SOUL Side Muffler Bypass Pipes

• Valved Side Muffler Bypass Pipes when the Valved configuration is selected

• Non-Valved Side Muffler Bypass Pipes when the Non-Valved configuration is selected

• Purpose-built SOUL exhaust support brackets

• Required heavy-duty mounting clamps

• AccuSeal connections where applicable

• Vacuum-line plugs for the Non-Valved configuration

• Selected 4-inch exhaust tips

DETAILS:

• Complete modular Competition exhaust package

• Removes the factory center muffler

• Removes both factory side mufflers when installed in full Competition configuration

• Allows individual factory muffler components to be reinstalled later

• Three usable exhaust configurations from one package

• Available Valved

• Available Non-Valved

• Valved configuration retains factory PSE / exhaust-valve control

• Non-Valved configuration eliminates exhaust-valve functionality

• Approximately 46 lbs of weight savings with the Valved configuration

• Approximately 49 lbs of weight savings with the Non-Valved configuration

• Significant reduction in mass at the extreme rear of the vehicle

• Reduces engine-bay heat retention

• Helps reduce heat soak toward the rear tires

• Designed to maintain reasonable cabin presence despite aggressive exterior sound

• Center Muffler Bypass incorporates an expansion-chamber acoustic design

• Valved system uses a reduced-flow path when closed to meaningfully lower exterior volume

• Constructed from mandrel-bent T304L stainless steel

• Includes Mikalor Supra Heavy-Duty W4 clamps

• Includes dedicated support brackets required when both factory muffler assemblies are removed

• No cutting required

• No welding required

• No ECU calibration required for the exhaust package itself

• No catalyst modification required

• No oxygen-sensor relocation required with factory headers

• SOUL reports no check engine lights associated with this system

• Six exhaust-tip choices per valve configuration

• Twelve total sellable configurations

• Backed by SOUL's Lifetime Warranty for street and track use

3-IN-1 MODULAR DESIGN:

The key advantage of this package is its ability to operate in multiple configurations.

Purchasing the complete package gives the owner:

1. Full Modular Competition Exhaust

SOUL Side Muffler Bypass Pipes + SOUL Center Muffler Bypass Exhaust

This removes all three factory muffler assemblies for maximum weight reduction and aggressive sound.

2. Side Muffler Bypass Configuration

SOUL Side Muffler Bypass Pipes + Factory Center Muffler

This prioritizes major weight reduction and heat management while retaining the original Porsche center muffler.

3. Center Muffler Bypass Configuration

Factory Side Mufflers + SOUL Center Muffler Bypass

This produces a more traditional GT3 center-muffler-delete sound while retaining the factory side mufflers and their associated sound-control characteristics.

The system can therefore be adjusted as the owner's track requirements, sound preferences, or driving environment change.

FULL COMPETITION CONFIGURATION:

When all components in the package are installed, the factory:

• Left side muffler

• Right side muffler

• Center muffler

are removed.

This creates a substantially freer exhaust path and removes a large amount of mass from the rear of the vehicle.

The complete system is intended for drivers prioritizing:

• Aggressive naturally aspirated sound

• Major weight reduction

• Reduced rear exhaust heat

• Track-oriented character

• Modular adjustability

PURPOSE-BUILT SUPPORT BRACKETS:

Removing both the factory side mufflers and center muffler also removes the original support architecture associated with those components.

SOUL therefore developed dedicated support brackets specifically for the complete Modular Competition Exhaust.

The brackets connect the remaining vehicle-side mounting locations to the SOUL Center Muffler Bypass and provide the structural support necessary when the original muffler assemblies are no longer installed.

The support system is also designed to help reduce:

• Exhaust vibration

• NVH

• Unnecessary stress on the exhaust assembly

The brackets are a critical part of the complete Competition configuration rather than an optional cosmetic component.

VALVED CONFIGURATION:

The Valved Modular Competition Exhaust retains the vehicle's factory Porsche exhaust-valve control.

This provides a level of sound adjustment despite the elimination of all three factory mufflers.

With the valves closed, SOUL routes 100% of the exhaust through the smaller-diameter secondary path before it enters the expansion-chamber section of the Center Muffler Bypass.

This produces a noticeable reduction in exterior sound.

The difference is less dramatic inside the cabin because the overall exhaust system remains considerably less muffled than stock, but the factory valve control still provides meaningful flexibility.

VALVES OPEN:

With the valves open, the Valved package provides its freer-flowing performance path.

Expect:

• Dramatically increased naturally aspirated flat-six sound

• Stronger mechanical engine character

• Greater throttle-related presence

• Aggressive downshifts

• Strong high-RPM wail

• Race-oriented exterior volume

• Much greater sound than the factory Porsche exhaust

• Full use of the modular muffler-delete architecture

VALVES CLOSED:

Closing the valves redirects exhaust through SOUL's quieter secondary route.

Expect:

• Noticeably lower exterior volume

• Reduced harshness

• More controlled exhaust character

• Reduced sound during neighborhood driving

• Useful sound reduction for pit-lane or track situations where applicable

• Less dramatic cabin change than the exterior change

The Valved system is therefore the better configuration for customers who want the full Competition package without completely abandoning exhaust-volume control.

NON-VALVED CONFIGURATION:

The Non-Valved package eliminates valve hardware entirely.

It provides:

• Permanently aggressive exhaust operation

• Simplified exhaust architecture

• Minimum possible package weight

• Approximately 3 lbs greater weight savings than the Valved system

• No quiet mode

• No factory PSE adjustment

• Constant performance-oriented sound

SOUL includes plugs for the unused vacuum lines when the Non-Valved configuration is selected.

WEIGHT SAVINGS:

The Modular Competition Exhaust provides some of the largest exhaust-related weight savings available for the 991 GT3 platform.

Valved Configuration:

Approximately 46 lbs of weight savings

Non-Valved Configuration:

Approximately 49 lbs of weight savings

The Non-Valved configuration therefore saves approximately:

3 additional pounds

compared with the Valved package.

Because the removed components sit at the extreme rear of the vehicle, the reduction is especially valuable on the rear-engined 911 platform.

HEAT MANAGEMENT:

Removing the factory side mufflers eliminates two large heat-retaining components surrounding the rear of the vehicle.

SOUL specifically developed the Side Muffler Bypass architecture to help:

• Reduce engine-bay heat soak

• Reduce exhaust-system thermal mass

• Reduce heat exposure toward the rear tires

• Improve thermal recovery between track sessions

This makes the package particularly attractive for cars subjected to extended high-load driving.

REASONABLE CABIN PRESENCE:

A complete center- and side-muffler-delete system could easily become objectionable inside the cabin if acoustic behavior were ignored.

SOUL specifically developed the Center Muffler Bypass's expansion-chamber design to reduce:

• Drone

• Vibration

• Low-frequency cabin resonance

SOUL describes the resulting package as having unusually reasonable cabin presence for such an aggressive straight-through GT3 exhaust configuration.

This does not mean the system is quiet.

The Modular Competition Exhaust is an aggressive system, but it is designed to avoid simply maximizing every undesirable frequency along with overall volume.

SOUND CHARACTER:

Expect:

• Dramatically increased flat-six presence

• Greater mechanical engine sound

• Aggressive idle and low-RPM character

• Increased throttle-related sound

• Stronger downshift presence

• Increased race-derived tone

• Much greater high-RPM intensity

• Naturally aspirated GT3 wail approaching redline

• Significantly increased exterior volume

The exact sound character can be changed by taking advantage of the system's modularity and reinstalling either the factory center or factory side mufflers.

MODULAR SOUND ADJUSTMENT:

If the complete package becomes too aggressive for a particular track, street environment, or trip, the owner is not locked into the full muffler-delete configuration.

The modular architecture allows the factory:

Center Muffler

or

Side Mufflers

to be reintroduced.

This lets the owner experiment with different combinations of:

• Sound volume

• Exhaust tone

• Weight

• Cabin presence

• Valve behavior

without purchasing another complete exhaust system.

WITH FACTORY CENTER MUFFLER:

Reinstalling the factory center muffler while retaining the SOUL Side Muffler Bypass Pipes provides:

• Major side-muffler weight reduction

• Reduced rear heat

• Retained factory center-muffler attenuation

• More exotic and controlled exhaust tone

• Reduced overall volume compared with the full Competition configuration

The Valved Side Muffler Bypass version also retains factory valve functionality in this arrangement.

WITH FACTORY SIDE MUFFLERS:

Reinstalling the original Porsche side mufflers while retaining the SOUL Center Muffler Bypass provides:

• Approximately 11 lbs of center-muffler weight reduction

• Deeper and more aggressive exhaust sound

• Factory side-muffler attenuation

• Factory valve functionality where applicable

• Greater sound control than the complete Non-Valved Competition configuration

FACTORY PSE CONTROL:

When the Valved package is selected, SOUL retains the factory Porsche Sport Exhaust control functionality.

The existing PSE control continues commanding the exhaust valves.

No separate aftermarket valve controller is required for the Valved package.

The Non-Valved package does not retain this functionality.

EXHAUST TIP FITMENT:

The Modular Competition Exhaust uses interchangeable 4-inch single-wall exhaust tips.

Two styles are available:

4" Slash Cut Single Wall

An angled outlet for a more aggressive appearance.

4" Straight Cut Single Wall

A traditional straight-cut circular outlet.

Each is offered in:

• Signature Satin

• Brushed

• Satin Black

SOUL accounts for the difference in bumper depth between the 991.1 and 991.2 chassis when supplying the appropriate tip configuration.

991.1 VS. 991.2 TIP LENGTH:

The 991.2 rear bumper has a different depth than the 991.1.

SOUL therefore uses longer exhaust tips for 991.2 applications to position the outlets correctly relative to the bumper.

Customers should provide the correct vehicle generation when ordering so the appropriate tip configuration is supplied.

DIRECT BOLT-ON INSTALLATION:

SOUL designed the package as a bolt-on system.

Installation requires:

• Removal of the factory center muffler

• Removal of both factory side mufflers

• Installation of the SOUL Side Muffler Bypass Pipes

• Installation of the SOUL Center Muffler Bypass Exhaust

• Installation of the dedicated support brackets

• Installation and alignment of the selected exhaust tips

There is:

• No cutting

• No welding

• No permanent modification to the vehicle

SOUL describes installation as straightforward enough for experienced DIY enthusiasts.

CHECK ENGINE LIGHT:

The Modular Competition Exhaust is installed downstream of the factory oxygen sensors.

With factory header architecture retained, the oxygen sensors remain in the headers and are not affected by removal of the center and side mufflers.

SOUL states that no check engine lights are associated with this system.

The package itself therefore does not require ECU calibration simply for installation.

This should not be confused with installing separate catless Competition Headers, which introduces different emissions and diagnostic considerations.

WITH SOUL STREET HEADERS:

Pairing the Modular Competition Exhaust with SOUL Street Headers creates an extremely aggressive catted complete exhaust configuration.

This combines:

• High-flow performance catalysts

• Upgraded header architecture

• Complete center- and side-muffler bypass

• Major rear weight reduction

• Strong naturally aspirated sound

• Modular exhaust configuration

WITH SOUL COMPETITION HEADERS:

Pairing the package with SOUL Competition Headers creates one of the most aggressive exhaust configurations available for the platform.

This combination removes:

• Factory catalytic converters

• Factory side mufflers

• Factory center muffler

and provides:

• Maximum exhaust flow

• Maximum exhaust sound

• Major exhaust-system weight reduction

• Track-oriented engine character

• Reduced rear exhaust heat

Applicable ECU calibration and emissions considerations should be addressed separately when using catless headers.

PERFORMANCE:

The Modular Competition Exhaust reduces downstream exhaust restriction and substantially decreases vehicle mass.

However, SOUL does not publish a controlled standalone horsepower or torque gain for this package.

The primary verified benefits are:

• Approximately 46–49 lbs of weight savings

• Increased exhaust flow

• Increased naturally aspirated sound

• Reduced rear heat retention

• Modular sound adjustment

• Optional factory valve functionality

EMISSIONS NOTE:

When used with the original Porsche headers and catalytic converters, the Modular Competition Exhaust does not remove the vehicle's factory catalyst assemblies or oxygen sensors.

The package modifies exhaust components downstream of the emissions-control hardware.

Customers using separate aftermarket headers or catalyst-delete components are responsible for determining the emissions compliance of their complete vehicle configuration.