RENNtech ECU+ Upgrade | W212 | E63 AMG | Sedan | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2012-13 porsche-718-cayman--982---2017-present--esr1407019 Rated by RENNtech (peak @crank):

Rated by RENNtech (peak @crank):              392 HP @ 5

GLC 43 AMG SUV (X253 | M276 | 3

RENNtech ECU Upgrade for the 217 - CLA 45 AMG

Gains: +20HP & 14LB-FT

RENNtech ECU+ Upgrade | W212 | E63 AMG | Sedan | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2012-13 porsche-718-cayman--982---2017-present--esr1407019 Rated by RENNtech (peak @crank):ECU+ 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