SOUL Performance Street Long-Tube Headers for 991.1 Porsche 911 Carrera

SOUL Performance Products’ Long Tube Street Headers for the Porsche 991.1 Carrera replace the factory manifolds with a true performance-focused design built around large-diameter, free-flowing HJS 200-cell catalytic converters and long-tube runners, unlocking meaningful gains in power, throttle response, and classic flat-six tone. Optimized 2″ primaries and carefully engineered collectors are specifically sized for the 3.8L and 3.4L 9A1 engines, helping the car pull harder through the midrange and delivering verified gains of over 25whp and ft-lb around 3,000rpm where you spend most of your street driving. Each set of headers is hand-built from T304L stainless steel at SOUL’s Willow Grove, PA facility with smooth-radius runners, merge spikes to streamline gas flow into the collectors, and thick water jet,cut flanges manufactured to ISO 9001:2015 standards for durability and a precise seal. The premium HJS HD 200-cell catalytic converters are EURO 4–capable and use a robust triple-foil core and brazing stripe for exceptional longevity under high-heat, high-load conditions, allowing increased flow and performance without the usual check engine light concerns when used as intended. Designed as a direct bolt-on for all 2012–2016 991.1 Carrera variants, these Long Tube Street Headers integrate cleanly with the factory exhaust, arrive with detailed instructions, and are backed by SOUL’s renowned Lifetime Warranty for both street and track use, making them a go-to upgrade for owners who want real, dyno-proven performance and a richer, more engaging exhaust note without sacrificing reliability.

Development & Sound

• The factory header design is a basic, mass-produced component that does not meet performance requirements. However, SOUL Performance Products took a distinctive approach by developing a specialized application specifically for the 991.1 platform. They focused on accurately sizing the runners at 2″, aiming to extract optimal power from the 3.8L engine while also achieving significant gains for the 3.4L variant.

Construction

• Every set of 991.1 headers is meticulously crafted from T304L stainless steel. These headers feature merge spikes strategically integrated to enhance exhaust flow into the collector, thereby maximizing power output. The headers are equipped with thick water jet cut flanges manufactured to adhere to ISO 9001:2015 standards, ensuring precise fitment and prolonged product longevity. To further ensure their pristine condition upon arrival, each exhaust undergoes testing in a dedicated fixture and is thoughtfully foam packed for secure transportation.

HJS Catalysts

• SOUL Performance Products incorporates the most superior catalytic converters available, renowned for their unrivaled flow and exceptional durability within the industry. These converters demonstrate remarkable efficiency, meeting stringent EURO 4 emission standards while simultaneously facilitating increased flow without triggering a check engine light. The HD design adopts a premium triple foil winding technique, ensuring unmatched strength. As an additional feature for enhanced durability, a brazing stripe is employed to prevent any movement or damage to the core during sustained high horsepower abuse. SOUL Performance Products purposefully utilizes a generously sized catalyst that is appropriately matched to maximize gains, leaving no room for compromises in performance.

Power

• Independent dyno testing conducted at Apex Autowerks on a Mustang dyno has provided verified results, showcasing consistent peak gains of 9whp and 13ft-lbs of torque. Notably, a noticeable improvement can be observed in the mid-RPM range. Furthermore, substantial gains exceeded 25whp and 25ft-lbs of torque at 3000rpm, a range commonly experienced during regular driving. With the addition of an ECU tune, even greater power enhancements can be achieved, particularly beyond 5000rpm, where adjustments to timing can make a significant difference.

Bolt On & Go

• Every set of headers with catalytic converters is meticulously constructed and subjected to rigorous testing within a sturdy aluminum fixture of significant gauge. This process effectively prevents warping and guarantees flawless fitment. Subsequently, the headers are carefully foam packed to ensure they arrive in pristine condition. Moreover, the package includes new high-grade hardware specifically designed for secure attachment between the headers and exhaust flange. Additionally, comprehensive installation instructions are thoughtfully provided in the package, enabling a straightforward installation process suitable for most do-it-yourself enthusiasts.

Features

• 2″ long-tube T304L stainless primaries with optimized collectors
• High-flow HJS HD 200-cell catalytic converters (EURO 4–capable, triple-foil core)
• Dyno-proven gains of 25+whp and 25+ft-lb around 3,000rpm
• Merge spikes and thick ISO 9001:2015 flanges for flow, sealing, and durability
• Direct bolt-on fitment for all 2012-2016 991.1 Carrera models
• Backed by SOUL Performance Products’ Lifetime Warranty

Applications

• Porsche 911 Carrera: 991.1 (2011-2016)
  [3.0L F6 twin-turbo]
  

Notes

• Please be aware that this specific product does not possess CARB certification and may not comply with legal requirements for usage on emissions controlled vehicles. It is solely intended for exclusive use in closed course competitions.

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.