RENNtech Intermediate ECU Upgrade | R231 | SL 63 AMG | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2012-14 mercedes-benz-g-class--463---1990-2018--g-55-amg-esr3006970 NOTE: CPC upgrade is intended

NOTE: CPC upgrade is intended for use with RENNtech ECU software

CLA (C117) CLA 45 AMG (HP: 360 | Year: 13 >)

Bentley  Continental GT Speed (MY2012-18)

moving forward is easy and gives owners the ability to evaluate the impact of each level of modification through the stages

Professional installation is recommended

RENNtech Intermediate ECU Upgrade | R231 | SL 63 AMG | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2012-14 mercedes-benz-g-class--463---1990-2018--g-55-amg-esr3006970 NOTE: CPC upgrade is intendedIntermediate 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