Porsche E3 Cayenne 4.0L V8 GTS/Turbo XperTune Performance Software Accessories & Apparel Larger catalytic converters are better

Larger catalytic converters are better because they allow for more exhaust flow and the increased catalysts surface area allows for better exhaust gas filtering which means emissions compliance and will NOT trigger a check engine light

DISCLAIMER: The Supercup exhaust should only be installed in conjunction with our Sport Cat Downpipes as they were engineered to work with each other and compliment the sound of the vehicle - highlighting specific tones while reducing drone

NOTE: The Catbypass X-Pipe provides dramatic power increases in the mid to high end of the RPM range

The perfect compliment to Fabspeed's 997 Turbo exhaust upgrades

BECAUSE Fabspeed ELIMINATES the stock internal 996 underside airbox restrictive muffler/ resonator

Porsche E3 Cayenne 4.0L V8 GTS/Turbo XperTune Performance Software Accessories & Apparel Larger catalytic converters are betterAchieve maximum power from the 2019+ Porsche Cayenne GTS Turbo 4. 0L Twin Turbo V8 engine without sacrificing driveability or reliability by optimizing the engine's performance. Performance ECU software upgrade improves horsepower, torque, and driving characteristics by reprogramming various sensor inputs, air fuel ratios, and boost pressure (if applicable). Not applicable on hybrid models. COMPATIBILITY: Fits Porsche E3 Cayenne GTS Turbo 4. 0L Twin