RENNtech ECU Hand Held Tuner | HHT | W211 | E55 AMG Kompressor | 517HP/552LB-FT | 5.5L Kompressor | M113 | MY2003-2006 mercedes-benz-s-class--223---2021-present--s-500-esr4433616 RENNtech stainless steel (SS) sport

RENNtech stainless steel (SS) sport mufflers are hand made and rigorously tested to provide maximum performance

We have found the M176 engine stock performance numbers vary from the baseline figures claimed by Mercedes Benz

Available in black or chrome

W463 | G-Wagon

RENNtech ECU Hand Held Tuner | HHT | W211 | E55 AMG Kompressor | 517HP/552LB-FT | 5.5L Kompressor | M113 | MY2003-2006 mercedes-benz-s-class--223---2021-present--s-500-esr4433616 RENNtech stainless steel (SS) sportRENNtech ECU HHT (HandHeldTuner) for the 211 E55 AMG Kompressor. Up to 517HP and 552LB FT. Gains: +48HP & +36TQ. 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.