SOUL Sport Catalytic Converters Porsche 997 Carrera (2005-2008)

Upgrade your 2005–2008 Porsche 911 Carrera (997.1) with these high‑flow sport catalytic converters from SOUL — designed to unlock the flat‑six’s potential without compromising emissions compliance or triggering a check‑engine light. By replacing the restrictive stock cats with T304L stainless, mandrel‑bent, smooth‑flow sport catalysts, these units reduce exhaust back‑pressure and allow the engine to exhale more freely. The result: stronger throttle response, richer midrange torque, and a deeper, more aggressive “flat‑six growl” that enhances the driving experience — while retaining street‑legal status. With proven dyno gains and quality construction, this upgrade helps transform a stock 997.1 into a more dynamic, responsive, and sonorous sports car.

Fitment Notes

• Compatible with all 2005–2008 Porsche 911 Carrera 997.1 models (with or without factory PSE / valved exhaust) — check whether your rear exhaust variant is “Non‑PSE” or “PSE” to confirm correct part number. 

• Designed to connect directly to existing headers and exhaust flanges — no custom fabrication required, making installation straightforward for competent shops. 

• Suitable as a standalone flow upgrade or as part of a full exhaust overhaul; retains catalytic function, thereby avoiding check‑engine issues that many “catless” systems suffer.

Included

• Full set of sport catalytic converter assemblies for both exhaust banks (left + right), built from mandrel‑bent .065" T304L stainless steel.

• All necessary hardware and flanges to mate with factory header/exhaust manifold and downstream piping.

Product Specs

• Material: T304L stainless steel, thick‑wall (.065") for durability and thermal resistance.

• Flow Design: Smooth mandrel bends and optimized internal catalyst media designed to reduce restriction while still scrubbing emissions — a high‑flow catalytic converter approach.

• Weight: Approximately 13 lbs total (vs ~15 lbs for stock components) — modest weight saving for slightly improved responsiveness. 

• Performance Gains (measured on dyno): +10 wheel horsepower (whp) and +14 ft‑lbs torque — with especially noticeable improvement in throttle response and mid‑range power delivery.

Product Features

• Higher‑flow catalysts — strong, real gains: These sport catalytic converters free up exhaust flow significantly compared to stock units, delivering measurable +10 whp and +14 ft‑lbs torque — not just for show, but real performance.

• Deeper, richer flat‑six sound: The freer flow and split‑bank design give the 997.1 Carrera a more muscular exhaust note — deeper, fuller, and more characterful, without becoming harsh or obnoxious. 

• Preserves emissions compliance & avoids check‑engine lights: Because these are catalytic converters (not catless/delete pipes), you retain emissions scrubbing and avoid common issues associated with cat‑delete setups.

• Quality stainless construction for longevity: Made in-house from T304L stainless with mandrel‑bent pipes and thick‑wall material — designed to resist corrosion, withstand heat cycles, and stay durable under street or track use.

• Direct bolt‑on for easy installation: Engineered to use factory mounting points and flanges — no custom welding or fabrication needed, making installation simpler and more reliable.

• Balanced performance upgrade: The converters provide a meaningful balance — better flow, stronger sound and power — without compromising drivability, emissions compliance, or forcing you into a full race‑only setup.