RENNtech ECU Upgrade | X253 | GLC 43 AMG | SUV | 400 HP / 440 LB-FT | M276 | 3.0L V6 BiTurbo | MY2016-2022 r-package Application for BMW:

Application for BMW:

Up to 588HP and 616LB-FT

AMG GLE 63  (MY 2021) | W167 | M177 | 4

563 HP @ 6800 RPM

Most of the industry utilizes a lower cost

RENNtech ECU Upgrade | X253 | GLC 43 AMG | SUV | 400 HP / 440 LB-FT | M276 | 3.0L V6 BiTurbo | MY2016-2022 r-package Application for BMW:The RENNtech ECU upgrade brings the GLC 43 AMG SUV up to 400 HP and 440 LB FT Gains: +25 HP and +42 LB FT. 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.