RENNtech Intermediate ECU Upgrade | W221 | S 63 AMG | Sedan | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2011-13 mercedes-benz-e-class-sedan--213---2017-present--e-400-esr7342366 Up to 460HP and 464LB-FT

Up to 460HP and 464LB-FT

Rated by RENNtech (peak @crank):              740 HP @ 5

900rpm Note: Mercedes M278 engine performance when measured

RENNtech Power Module  | CLE 53 AMG | 3

CLASS G (W 463) 500 V8 Torpedo [2 Filters Required] (HP: 296 | Year: 00 > 07)

RENNtech Intermediate ECU Upgrade | W221 | S 63 AMG | Sedan | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2011-13 mercedes-benz-e-class-sedan--213---2017-present--e-400-esr7342366 Up to 460HP and 464LB-FTIntermediate ECU Upgrade Up to 638HP 695TQ Gains: +75HP +101TQ 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