RENNtech ECU Hand Held Tuner | HHT | W204 | C 63 AMG Black Series | 517HP/485LB-FT | 6.3L N/A | M156 |MY2012 mercedes-benz-s-class--222---2018-2020--s-560-maybach-esr2691399 The central area features a

The central area features a low-drag

ECU+ Upgrade | 523HP / 583TQ | Gains: +102 HP / +128 TQ

RENNtech M157 Biturbo ECU+ Upgrades are TÜV approved

With the proprietary RENNtech ECU+ Tuning the W463 - G550 (MY2019+) gains up to +102 HP and +128 LB-FT

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

RENNtech ECU Hand Held Tuner | HHT | W204 | C 63 AMG Black Series | 517HP/485LB-FT | 6.3L N/A | M156 |MY2012 mercedes-benz-s-class--222---2018-2020--s-560-maybach-esr2691399 The central area features aRENNtech ECU HHT (HandHeldTuner) for the 204 C 63 AMG Black Series. Up to 517HP and 485LB FT. Gains: +7HP & +28LB 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.