Porsche 991.1 Carrera Base (without PSE) Valved Performance Exhaust System


Our 991.1 Carrera Valved Performance Exhaust System has been designed with the professional enthusiast in mind. With valves open exhaust gases are free to exit through a completely unrestricted path out the tips offering a flat six symphony with a tone that will raise the hairs on the back of your neck! On your way to pick up a client or heading out to dinner with someone special? Keep the valves in closed position and enjoy a refined low key tone as the factory side mufflers do their job quite well. If you’re worried about drone on your PDK equipped car, this system will not leave you disappointed.

+  Fits all Porsche 991.1 Carrera Base models without PSE ONLY (2012-2016)
Valves are controlled with included valve controller and optionally, HomeLink controls
+ Ensure that attached installation instructions are followed for NON-PSE CARS ONLY
All Soul Performance Products exhaust components are backed by a renowned Lifetime Warranty for both street and track use



Many owners are underwhelmed with their 991.1 Carrera’s sport exhaust sound and performance – it’s just not enough. We’ve set out to create an exhaust with a true Jekyll and Hyde personality that matches perfectly with the persona of the Carrera – a wolf in sheep’s clothing. Our first priority was to design the system so that with valves open, exhaust gases would have a straight flow path. By using a larger tubing diameter, smooth radius bends and proper X-pipe crossover flow characteristics (improving exhaust scavaging effects, leading to increased volumetric efficiency), our system improves throttle response and performance drastically over the restrictive factory sport exhaust.

DEVELOPMENT AND TESTING:  Our aim was to refine the level of daily driving comfort without sacrificing the race inspired tone and straight-through exhaust design. A larger resonator would not yield the results we are looking for while requiring some revisions for clearances – this could compromise the high flow design principles of our exhaust. Adding higher flowing aftermarket headers – like our Long Tube Street Headers – to an aggressive rear system without proper sound attenuating features could result in a overly loud, possibly unpleasant driving experience. Nearly 40% of our customers paired their rear exhaust with upgraded headers making it imperative that we consider such a configuration and engineer the exhaust appropriately. Helmholtz resonators (also known as anti-drone tubes) are an effective way to reduce undesirable frequencies when engineered and utilized correctly.  The 991.1 Carrera has an inherent 3,000-3,500 RPM range where drone can present itself when you add higher flowing exhaust components. Our goal was to filter out the undesirable frequencies in that range while smoothing the valves closed to open transition on factory PSE equipped cars. For the base model, we devised a solution to allow for retaining the factory side mufflers – simply cut the factory side mufflers and clamp on the included secondary pipes which connect the side mufflers to the exhaust tips!

Our final design has proved to offer the very best results on this application and achieved our high standards for sound quality and drivability. The math can be done to create the Helmholtz resonators – but how you incorporate them into your design makes a big difference.

SOUND:  The sound is aggressive – a primary benefit of our system is that with valves open there is straight, unrestricted path from the 2.5″ piping to the tips – but we’ve effectively massaged extra refinement into the system to match the premium experience that embodies all things Porsche. With valves both open and closed the X-pipe helps smooth the sound even further. All in all, we’re very happy with the results and we’re sure you will be too! With valves open, the free flowing nature of the system allows for a Cup car inspired sound – greater volume with a greater amount of crackles and burbles on deceleration.  This system is for those who want added aggression at the press of a button. With valves closed the tone is very reasonable and refined, drone is kept to a minimum while still allowing for the flat six sound to be heard.

POWER:  Eurocharged Canada unlocked gains of 27 whp and 36 ft-lbs of torque at 4,000 RPM with their ECU tune, SOUL Valved Performance Exhaust System, and BMC Air Filters on 93 octane fuel.

CONSTRUCTION:  Each exhaust is built in house out of mandrel bent, thick wall .065″” T304L stainless steel, then rigorously quality checked. Back purged TIG welding ensures proper weld penetration and longevity.


BOLT ON AND GO:  Each exhaust is tested in a fixture to ensure perfect fitment and then foam packed to arrive in perfect condition. Thorough installation instructions are included in the box for a straightforward install that can be performed by most DIY enthusiasts. New high grade hardware is included. A valve controller kit is included to control the valve operation. Open and close the valves with the included controller fobs or pair the controller with your HomeLink system (two buttons required).

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.


  • Installation of the valve controller requires removing rear bumper, locating and tapping a 12V switched power source, and installing vacuum lines. We highly recommend professional installation for this Porsche exhaust system. For recommendations of your nearest SOUL parts installer, please contact us.
  • Cutting of the factory side mufflers is required to incorporate included piping to tips.



  1. William Hall

    Just got my car back from EuroHaus who installed the sport cat/valved exhaust system on my 911 4S 991.1. Going from a non-PSE to your system is transformational. With the valves closed it sounds almost like it did before, but with a slightly lower tone. Open the valves and wow! My cars sounds like a Porsche! I still have a big smile on my face and I’ve been parked for a while. All the guys at the shop just loved the sound and really admired the build quality of your products. Thanks again for making my car even more fun!

  2. chris Russell

    Received my new exhaust this week and Motorsports of Lexington squeezed me in for install on a Thursday. Unfortunately, there were two parts missing but SOUL handled it perfectly and shipped them overnight. I got my car back on Friday. Unbelievable sound! Hard to explain the transformation. Its a demon now. LOL Thanks for putting soul into my 911. Highly recommend SOUL Performance.

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