RENNtech ECU+ Upgrade | W212 | E63 AMG | Sedan | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2012-13 rpm Gains: +39HP & +20LB-FT

Gains: +39HP & +20LB-FT

countless hours of in house research

These updated air suspensions utilize newly developed factory control units and are found in the following vehicles:

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

The pre-impregnated (prepreg) fiber method creates stiffer

RENNtech ECU+ Upgrade | W212 | E63 AMG | Sedan | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2012-13 rpm Gains: +39HP & +20LB-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