RENNtech ECU Upgrade | X253 | GLC 43 AMG | SUV | 400 HP / 440 LB-FT | M276 | 3.0L V6 BiTurbo | MY2016-2022 r-package When installing Akrapovič aftermarket exhaust

When installing Akrapovič aftermarket exhaust system that was developed for use on closed tracks

GT4 -style Radiator Protection Screens for AMG GT / S / C -series Coupe and Roadster MY 2019 +

SL (R230) 600 V12 [2 Filters Required] (HP: 517 | Year: 06 > 09)

the module can be unplugged and the screen goes back to the regular Mercedes menu

Note: The Akrapovic Evolution Exhaust system will not work with the RENNtech Sound and Performance Exhaust

RENNtech ECU Upgrade | X253 | GLC 43 AMG | SUV | 400 HP / 440 LB-FT | M276 | 3.0L V6 BiTurbo | MY2016-2022 r-package When installing Akrapovič aftermarket exhaustThe 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.