RENNtech ECU Hand Held Tuner | HHT | CLS 63 AMG | C219 | 534HP/485LB-FT| 6.3L N/A | M156 | MY2007-2011 mercedes-benz-cls-class--219---2006-2011--cls-63-amg-esr3294546 694 LB-FT @ 3

694 LB-FT @ 3

RENNtech | C/R 190 | AMG GT (Facelift) | Carbon Fiber Front Splitter

Sizes: S - 4XL

adding convenience for track and street driving

RENNtech ECU Hand Held Tuner | HHT | CLS 63 AMG | C219 | 534HP/485LB-FT| 6.3L N/A | M156 | MY2007-2011 mercedes-benz-cls-class--219---2006-2011--cls-63-amg-esr3294546 694 LB-FT @ 3RENNtech ECU HHT (HandHeldTuner) for the 219 CLS 63 AMG. Up to 534HP and 485LB FT LB FT. Gains: +27HP & +20LB 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.