RENNtech Stainless Steel Sport Mufflers for 230 - SL 500 & 600 porsche-cayenne--92a---2011-2018--s-e-hybrid-esr9908392 TCU Upgrade: TCU upgrade delivers

TCU Upgrade: TCU upgrade delivers faster acceleration by matching the power output of our ECU and Turbo upgrades with increased Clutch Torque Limits

It features our patented Venturi housings which allow for the smoothest possible airflow to the turbo inlets

This optimal level of quality and fitment accuracy is achievable through multi-piece pre-preg carbon fiber tooling

RENNtech AMG GT63 Rear Diffuser is a perfect fit to the vehicles OEM bumper

which is then fine balanced as a complete assembly to safely allow for these increases

RENNtech Stainless Steel Sport Mufflers for 230 - SL 500 & 600 porsche-cayenne--92a---2011-2018--s-e-hybrid-esr9908392 TCU Upgrade: TCU upgrade deliversRENNtech Steinless Steel Sport Mufflers for the 230 SL 500 & 600. Gains: +15HP & +20TQ. RENNtech stainless steel (SS) sport mufflers are hand made and rigorously tested to remove any unwanted resonances in the cabin to deliver a deep sound that keeps with the character of a luxury performance vehicle. Our mufflers offer lighter weight than the stock exhaust and improve performance by reducing exhaust back pressure and improving exhaust gas flow.