By-pass catalytic converters – Porsche Cayenne (955 S)

This version deletes the secondary catalytic converters. The car keeps its primary converters, framed by the Lambda sensors: they handle the relationship with the engine management unit, so there is no impact on engine management. Replacing the secondary converters with pipes brings better flow and a better sound – essential for a meaningful sound: replacing the rear muffler alone is not enough.

Fitting

• Strictly original interfaces: direct replacement, no modification
• Mount between the primary converters and the muffler
• Average fitting time: 2 hours including removal
• A lift is essential: the secondary converters sit under the car, at front seat level
• Tighten all nuts progressively; fitting kit included: clamps, stainless bolts, stainless lock nuts, high-temperature copper grease