RENNtech EVM | Exhaust Valve Module | Audi | S8 (D3/4E) mercedes-benz-e-class-sedan--211---2003-2009--e63-amg-esr3705573 Our proprietary ECU+ upgrade for

Our proprietary ECU+ upgrade for the Mercedes M157 engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability

Not just a pretty front facia

RENNtech is proud to introduce this sporty yet elegant rear deck lid spoiler for the S-Class

Rated by RENNtech:               435 HP @ 5

C238 - E-Class Coupe E400 BiTurbo Coupe | MY2017+

RENNtech EVM | Exhaust Valve Module | Audi | S8 (D3/4E) mercedes-benz-e-class-sedan--211---2003-2009--e63-amg-esr3705573 Our proprietary ECU+ upgrade forEVM Exhaust Valve Module (Remote Controlled) NOT SO FUN FACT: Sportscars equipped with factory exhaust valves, with or without a center console button to open or close them, the factory settings do NOT allow the valves to fully open unless certain speed and or RPM have been reached. For example, while cruising the exhaust valves will never fully open! THE EVM SOLUTION: By pressing Button 1 on the remote control, RENNtechs Exhaust Valve Module (EVM)