RENNtech ECU Hand Held Tuner | HHT | W204 | C 63 AMG | 517HP/485LB-FT | 6.3L N/A | M156 | MY2008-2015 mercedes-benz-gls-class--167---2020-present--gls-450-esr7245365 Weight optimization and developed specifically

Weight optimization and developed specifically for the Mercedes-Benz SL-Class

RENNtech A1 Carbon Fiber Aero -package is designed to increase the aerodynamic properties and complement the aggressive looks of the Mercedes-AMG GT63 4-door coupe

The OG RENNtech logo underscores Hartmut Feyhl's direct lineage from AMG and his role in shaping the Hammer legacy

Up to 709 HP and 638 LB-FT @ crank

SLS AMG GT (C197) Stock Performance:

RENNtech ECU Hand Held Tuner | HHT | W204 | C 63 AMG | 517HP/485LB-FT | 6.3L N/A | M156 | MY2008-2015 mercedes-benz-gls-class--167---2020-present--gls-450-esr7245365 Weight optimization and developed specificallyRENNtech ECU HHT (HandHeldTuner) for the 204 C 63 AMG. Up to 517HP and 485LB FT LB FT. Gains: +66HP & +52LB FT. 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.