RENNtech ECU+ Upgrade | W212 | E63 AMG | Sedan | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2012-13 rpm Up to 536HP and 552LB-FT

Up to 536HP and 552LB-FT

Crank Performance Numbers are calculated with a 14% Drivetrain loss on RWD vehicles

CLK COUPE' (C 209) 63 AMG [2 Filters Required] (HP: 481 | Year: 06 > 09)

Combined with RENNTECH's ECU software our S 63 down pipes create an incredible sound with performance to match

countless hours of in house research

RENNtech ECU+ Upgrade | W212 | E63 AMG | Sedan | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2012-13 rpm Up to 536HP and 552LB-FTECU+ Upgrade Up to 669HP 734TQ Gains: +119HP +190TQ 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. Programming takes only a few minutes and the vehicle can be