RENNtech | Diverter Valve | M157 | 3rd Gen | 231 - SL63 AMG audi-rs4--b7---2006-2008--4-2-v8-fsi-esr4648829 Sport Mufflers and CF Airbox

Sport Mufflers and CF Airbox | Gains: +166HP

400rpm Note: Mercedes M178 engine performance when measured

Gains: Up to +139HP | +83LB-FT

The bright LED light features a magnetic clip that can be rotated and attached to any magnetic surface

RENNtech Carbon Fiber Brake Ducts for 190 AMG GT Family

RENNtech | Diverter Valve | M157 | 3rd Gen | 231 - SL63 AMG audi-rs4--b7---2006-2008--4-2-v8-fsi-esr4648829 Sport Mufflers and CF AirboxRENNtech 3rd Generation Diverter Valve M157 5. 5L V8 BiTurbo. Applicable for the R231 SL63 AMG RENNtech's 3rd Generation Diverter Valve for the M157 5. 5L V8 BiTurbo features an all new Blow Off Valve implemented into the re designed OEM turbo tubes. The Diverter Valve releases the boost in high boost situation and or boost spikes. This especially helps during the shifting process, for faster shifting and a quicker boost response for the next gear. It