RENNtech ECU Hand Held Tuner | HHT | CLS 63 AMG | C219 | 534HP/485LB-FT| 6.3L N/A | M156 | MY2007-2011 mercedes-benz-gls-class--167---2020-present--gls-450-esr7245365 CLK (C208) 430 [2 Filters

CLK (C208) 430 [2 Filters Required] (HP: 279 | Year: 98 > 02)

and modifying boost mapping for turbo-chargers the Mercedes-AMG 53 M256 3

The vast amount of increased torque across the entire RPM range gives the 550 an extra edge to compete with AMG powered vehicles

580 LB-FT @ 3

C43 AMG Coupe (C205 | M276 | 3

RENNtech ECU Hand Held Tuner | HHT | CLS 63 AMG | C219 | 534HP/485LB-FT| 6.3L N/A | M156 | MY2007-2011 mercedes-benz-gls-class--167---2020-present--gls-450-esr7245365 CLK (C208) 430 [2 FiltersRENNtech 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.