RENNtech Intermediate ECU Upgrade | R231 | SL 63 AMG | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2012-14 mercedes-benz-sl-class--232---2022-present--sl-63-amg-biturbo-esr6220778 rotors and calipers

rotors and calipers

950rpm Note: Mercedes M178 engine performance when measured

000rpm Note: Mercedes M133 engine performance when measured

RENNtech Carbon Fiber Wing is available with tall or low style stanchions

This rear spoiler is a fully functional aerodynamic component as well as an aggressive exterior enhancement on the muscular CLS

RENNtech Intermediate ECU Upgrade | R231 | SL 63 AMG | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2012-14 mercedes-benz-sl-class--232---2022-present--sl-63-amg-biturbo-esr6220778 rotors and calipersIntermediate ECU Upgrade Up to 638HP 695TQ Gains: +75HP +101TQ RENNtech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal! Our proprietary tuning module stores both the RENNtech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port and delivers the file you choose directly to the ECU. Programming takes only a few minutes and the vehicle