RENNtech Intermediate ECU Upgrade | R231 | SL 63 AMG | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2015+ porsche-911--992---2018-present--carrera-gts---cabriolet-esr6371504 These parts were designed and

These parts were designed and engineered in house by RENNtech and are fully functional components that feature unmistakably unique styling for the SLS AMG

667 LB-FT @ 2

RENNtech is proud to introduce an all new rear decklid spoiler design for the Mercedes-Benz S-Class

The individual extractor openings are increased in size and reshaped for a more aggressive

550 LB-FT @ 3

RENNtech Intermediate ECU Upgrade | R231 | SL 63 AMG | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2015+ porsche-911--992---2018-present--carrera-gts---cabriolet-esr6371504 These parts were designed andIntermediate ECU Upgrade Up to 638HP 695TQ Gains: +33HP +25TQ 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