Porsche Cayenne GTS with secondary catbypass pipes and ECU upgrade. These test pipes are a direct replacement for the unnecessary set of secondary catalytic converters which improve overall sound and power. The EVOMSit ECU upgrade improves power by 22HP/20 ft-lbs of torque while the catbypass pipes increase by 11HP/12 ft-lbs of torque. The catbypass pipes will work with the OEM exhaust system or you can combine with muffler system and deluxe polished tips for even more power and exotic sound. Visit
