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 Lower or Raise your car

Lower or Raise your car to your prefered ride height

900rpm Note: Mercedes M278 engine performance when measured

the new setting is uploaded and the car will adjust to the new height

having minimal impact on the weight distribution and the center of gravity of your car

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

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 Lower or Raise your carIntermediate 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