SOUL Performance Valved Exhaust System for 991.1 Porsche 911 Carrera / GTS / S (with PSE)

The 991.1 Carrera Valved Performance Exhaust System from SOUL Performance is meticulously crafted with the professional enthusiast in mind. When the valves are open, the exhaust gases are able to flow freely through an unobstructed path, resulting in a captivating flat six symphony that will send shivers down your spine. Whether you’re on your way to an important client meeting or going out for a special dinner, simply keep the valves closed, and you’ll experience a refined and understated tone, as the factory side mufflers effectively carry out their job. For those concerned about drone on their PDK-equipped vehicle, rest assured that this system will exceed your expectations, providing a drone-free experience that leaves no room for disappointment. Many 991.1 Carrera owners find themselves underwhelmed by the sound and performance of their stock sport exhaust system; it simply doesn’t deliver the desired level of satisfaction. In response to this, they have embarked on a mission to create an exhaust system that possesses a true Jekyll and Hyde personality, perfectly aligning with the Carrera’s character of being a wolf in sheep’s clothing. Their primary objective was to design a system that allows for a straight flow path when the valves are open. By employing larger tubing diameter, smooth radius bends, and incorporating an X-pipe with optimized crossover flow characteristics, their exhaust system significantly improves throttle response and performance. These design enhancements maximize the exhaust scavenging effects, leading to increased volumetric efficiency and ultimately enhancing the overall driving experience.

Development & Testing

• Their objective was to strike a balance between enhancing the daily driving comfort and preserving the race-inspired tone and straight-through exhaust design. They recognized that simply incorporating a larger resonator would not achieve the desired outcome, as it would necessitate revisions to accommodate clearances and potentially compromise the high-flow design principles of their exhaust system. Moreover, the addition of higher-flowing aftermarket headers, such as their Long Tube Street Headers, to an already aggressive rear system, without proper sound attenuating features, could potentially lead to an excessively loud and potentially unpleasant driving experience.
• For customers who have combined their rear exhaust with upgraded headers, it becomes crucial to carefully consider and engineer the exhaust system accordingly. In such a configuration, the inclusion of Helmholtz resonators, also known as anti-drone tubes, can be an effective solution for reducing undesirable frequencies when properly engineered and utilized. In the case of the 991.1 Carrera, there is a specific RPM range, typically between 3,000 and 3,500rpm, where drone may become apparent when higher flowing exhaust components are added. Their objective was to eliminate these unwanted frequencies within that range, while also ensuring a smooth transition from valves closed to open, particularly on vehicles equipped with the factory Porsche Sport Exhaust (PSE) system.
• After rigorous testing and refinement, they have arrived at their final design, which has consistently delivered exceptional results on this particular application and met their stringent standards for sound quality and drivability. While the mathematical calculations for creating Helmholtz resonators can be performed, it is the thoughtful incorporation of these resonators into the overall design that truly makes a significant difference in achieving optimal performance.

Construction

• Every exhaust is meticulously constructed in-house using mandrel bent T304L stainless steel with a substantial .065″ wall thickness. Once built, each exhaust undergoes rigorous quality checks to ensure its impeccable craftsmanship and performance. The welding process employs back purged TIG welding techniques, guaranteeing optimal weld penetration and ensuring the exhaust’s long-lasting durability.

Sound

• The sound produced by their system is undeniably aggressive. One of the primary advantages of their exhaust system is the straight and unobstructed path, allowing exhaust gases to flow freely from the 2.5″ piping to the tips when the valves are open. However, they have also dedicated significant effort to infusing extra refinement into the system, ensuring that it perfectly matches the premium experience synonymous with Porsche.
• The inclusion of an X-pipe in both open and closed valve positions further contributes to smoothing out the sound profile. Overall, they are extremely pleased with the results achieved, and they are confident that you will be too. When the valves are open, the system’s free-flowing nature delivers a Cup car-inspired sound, characterized by a greater volume and an abundance of crackles and burbles during deceleration. This system is tailored for those seeking an added level of aggression, accessible with a simple press of a button. Conversely, when the valves are closed, the tone maintains a reasonable and refined quality, ensuring minimal drone while still allowing the distinctive flat six sound to be heard.

Bolt On & Go

• After being meticulously tested in a fixture to ensure impeccable fitment, each exhaust is carefully foam packed to guarantee its safe arrival in perfect condition. In addition, comprehensive installation instructions are included in the package, facilitating a straightforward installation process that can be easily carried out by most DIY enthusiasts. High-grade hardware is provided to ensure a reliable and secure installation.
• This system seamlessly integrates with the factory Porsche Sport Exhaust (PSE) controls, allowing for convenient control of the exhaust modes. However, it is worth noting that this system can also be utilized on non-PSE equipped S / GTS cars by incorporating a SOUL valve controller kit during installation.

Features

• Constructed from mandrel-bent T304L stainless steel with robust .065″ wall thickness
• In-house fabrication with rigorous quality control and fixture-verified fitment
• Unobstructed flow path when valves are open for maximum performance
• Smooth radius bends for improved exhaust flow
• Integrated X-pipe to enhance scavenging and smooth the sound
• Valves are controlled with factory PSE exhaust valve controls
• Dramatically improved throttle response
• Reuses oem tips
• Aggressive, Cup car-inspired exhaust note
• Direct bolt on installation
• All Soul Performance Products exhaust components are backed by a renowned Lifetime Warranty

Applications

• Porsche 911 Carrera: 991.1 (2011-2016)
  [3.8L F6]
  
• Porsche 911 Carrera GTS: 991.1 (2014-2016)
  [3.8L F6]
  
• Porsche 911 Carrera S: 991.1 (2011-2016)
  [3.8L F6]
  

Notes

• Reuses oem tips
• Rear bumper must be removed
• Soul Performance highly recommends professional installation
• Only fits vehicles with PSE

About SOUL Performance

SOUL Performance Products was founded by a group of automotive enthusiasts with deep industry experience and a commitment to doing right by their customers. Their mission is to deliver outstanding performance parts at fair pricing, backed by quality service and one of the best warranties in the industry. SOUL develops high-performance exhaust systems and components that are engineered for exceptional sound and proven performance, with products ready to ship quickly worldwide. Guided by core values of honesty, transparency, and passion for cars, they build strong community connections and prioritize customer satisfaction at every step. Operating out of a dedicated facility in Willow Grove, Pennsylvania, SOUL combines hands-on research, engineering, and manufacturing expertise to create parts that meet and exceed the demands of serious enthusiasts.