RENNtech ECU Hand Held Tuner (HHT) for C 55 | W203 | 380 HP / 395 LB-FT | MY2005-2006 mercedes-benz-s-class--222---2018-2020--s-63-amg-biturbo-esr3217492 RPM Tuned: 601 HP |

RPM Tuned: 601 HP | 562 LB-FT

Bentley  Continental GT Speed (MY2012-18)

Size and Offset optimized for 166 - GLE/ML63 AMG SUV

The addition of the upgraded diverter valve helps the engine to handle boost spikes in high boost pressure applications better

RENNtech Pre-Preg Carbon Fiber Rear Decklid Spoiler | C257 - CLS Coupe | Gloss Finish

RENNtech ECU Hand Held Tuner (HHT) for C 55 | W203 | 380 HP / 395 LB-FT | MY2005-2006 mercedes-benz-s-class--222---2018-2020--s-63-amg-biturbo-esr3217492 RPM Tuned: 601 HP |RENNtech ECU HHT (HandHeldTuner) for the 203 C 55 AMG. Up to 380HP and 395 LB FT. Gains: +18HP & +17LB 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.