RENNtech | Diverter Valve | M157 | 3rd Gen | 231 - SL63 AMG audi-rs4--b7---2006-2008--4-2-v8-fsi-esr4648829 A stiffer chassis means more

A stiffer chassis means more grip

Complete kit includes all parts required for installation

R1 includes: ECU Upgrade

RENNtech Carbon Fiber Brake Ducts for 190 AMG GT Family

400rpm Note: Mercedes M178 engine performance when measured

RENNtech | Diverter Valve | M157 | 3rd Gen | 231 - SL63 AMG audi-rs4--b7---2006-2008--4-2-v8-fsi-esr4648829 A stiffer chassis means moreRENNtech 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