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- Porsche 991.2 Speedster 4.0L (510Bhp) 2019
- Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
- Porsche 992.1 GT3 RS 4.0L 2022-24
Built for maximum power and sound for the 992 GT3 and GT3 RS with interchangeable cat sections. Long tube runners and CNC’ed merge collectors optimize flow through the headers out to straight 3″ piping with an x-pipe for a higher pitched and smoother sound.
• Fits all Porsche 992 GT3 / GT3 RS models (2022+), and 991 Speedster
• Weighs up to 25.3 lbs / 11.4 kg less than factory exhaust components (68.2 lbs vs 42.9 lbs catless / 47.6 catted)
• Modular cat sections allows swapping from catted to catless
• Valve simulators allow for removal of factory valves without throwing a check engine light!
• All Soul Performance Products exhaust components are backed by the industry’s first and finest Lifetime Warranty for both street and track use
• Designed and built in-house at our Willow Grove, PA facility
HEADERS
For those individuals looking to maximize performance, shed over 25 lbs, and realize full sound potential a complete race system is a logical conclusion. By pursuing a full system replacement we can eliminate the restrictive cat assemblies, the “particulate filters”, and the giant 7 ⅝ connection point to the factory rear muffler assembly. A simple flange optimization to our previous generation GT3 Competition Headers allows us to get rid of the factory 991 gen connection point requiring costly OEM clamps and donut gaskets and utilize a more efficient v-band connection point.
Even a premier engineering masterpiece like the GT3 comes from Porsche fitted with exhaust manifolds restricted in terms of primary tubing length, runner diameter, and merge collection efficiency due to dense catalytic converters, mass production, and emission restriction compromises. By refining the interface between the flange/primary tubes, using smooth radius large diameter bends, and implementing performance oriented collectors with merge spikes, we have been able to achieve increased flow, response, and performance with a more aggressive exhaust note to match. A slip on merge collector was not considered to prevent any chances of exhaust leaks. Instead we focused on designing a high flow collector from CAD to CNC for a no compromise end result. This bespoke billet collector allows for maximized runner length and the elimination of several welds in the interest of durability.
REAR EXHAUST SECTION
The rear of the SOUL Race Exhaust System is optimized into a single, full 3″ flow. The design of the factory system includes very large catalytic converters terminating into a very heavy dual entry muffler with restrictive piping with variations throughout the flow path which hinder performance. Those seeking a race setup will appreciate the 25+lbs weight savings and concentration on increasing exhaust flow.
From there we dove into creating a header-back system to maintain maximum flow characteristics with a higher, smoother pitch and aggressiveness akin to an RSR race car. This full 3” diameter system is made from thick .065” wall T304L stainless steel and TIG welded with back purging to ensure it withstands hardcore track abuse. It’s also modular to allow interchanging between catless or high flow catted assemblies with minimal effect on exhaust velocity. After the catted/catless section, the exhaust flows into an X section where we took care to minimize the diameter reduction while maximizing the blend of the exhaust to create that higher smoother pitch you hear in the videos.
The electronic valve actuators can not be simply removed from the valves or else the car will throw a CEL and put it into a reduced rev limiter to 6k rpm. We have engineered valve simulators to allow removal of the valves! Simply plug the simulators into the factory valve harnesses and expect no check engine lights or issues!
SOUND
The SOUL Race Exhaust System transforms the 992 GT3’s sound into an authentic Cup Car experience. The X-pipe blend produces a higher-pitched, motorsport-style wail, delivering race-ready volume and tone that’s extreme for street use but perfectly suited for track driving. The result is an authoritative, spine-tingling exhaust note worthy of Porsche’s GT racing heritage.
POWER
Dyno testing conducted by Hydra Motor Works revealed substantial power gains:
• +23 whp / +19 ft-lbs torque with the SOUL Race Exhaust System alone
• +60 whp / +26 ft-lbs torque peak gains with the addition of a Hydra Stage 2 ECU tune
• Maximum observed gains: over +60 whp / +70 ft-lbs torque
These are exceptional results for a naturally aspirated engine—transforming throttle response, midrange pull, and top-end performance.
CONSTRUCTION
Each component is handcrafted in the USA from mandrel-bent .065″ wall T304L stainless steel. The billet 304L stainless steel head flanges and merge collectors are precision-cut on a 5-axis CNC machine for superior flow, strength, and accuracy.
All joints are TIG welded and back-purged with ARCAL™ Prime argon gas to ensure perfect weld penetration and long-term durability—essential for demanding track conditions.
CHECK ENGINE LIGHT
Because the factory catalytic converters are removed, this system may trigger a CEL. For competition use, an ECU calibration or tune is recommended.
LIFETIME WARRANTY
All SOUL exhaust components are backed by a Lifetime Warranty covering both street and track use. Our team provides prompt and professional support to resolve any issues or answer questions.
NOTE:
+ This product is not CARB certified and may not be legal for use on emissions controlled vehicles; intended for closed course competition use only
Please note: sports catalytic converters or bypass pipes do have type approval and may not be legally installed on vehicles manufactured after 1st March 2001. They can not be used on a public road and are not MOT compliant, they are designed for race and track cars 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.992GT3.RES
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Replacement rear Exhaust. Ø60mm Outlet pipe With TÜV/EEC approval
Fits:
Porsche 911 1974-83
Only to be used with SSI or straight through heat exchanger systems
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91122092211S
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
With TÜV/EEC approval
Fits:
Porsche 911 1965-73 Non Impact Bumper Cars
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91122092510S
The product you are viewing cross references to these numbers
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Fits:
Porsche 911 3.0L / Carrera 3.2L 1978-83 all models
Maxflow Dual Outlet Sport Exhaust is manufactured from 100% T304 mandrel bent stainless steel . The outlets are 4.5inch rolled edge, angle cut and mirror polished. Both single and dual outlets are available. We offer a unique single outlet system retrofitable to dual outlets at a later date. Mufflers are extra heavy duty 16 gauge stainless steel, Maxlow system works well with all future performance improvements and has greatly improved throttle response with lower engine temperature.
Please note: This is a special-order item manufactured to order. In some cases, please allow 4 – 5 weeks for the delivery. Special order items cannot be cancelled from this supplier once your order has been placed.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FSPOR911MAXD
The product you are viewing cross references to these numbers