RENNtech ECU Upgrade | C253 | GLC 43 AMG | Coupe | 400 HP / 440 LB-FT | M276 | 3.0L V6 BiTurbo | MY2016-2022 mercedes-benz-g-class--463---1990-2018--g-55-amg-esr4572509 and these beautifully crafted additions

and these beautifully crafted additions are designed to fit perfectly with the carbon- diffuser

The 3-way has a very large working range of dampening adjustment and allows for nearly any adjustment possibility

Fitment: Mercedes-Benz AMG GLS (167 -chassis)

The R1 performance package includes our proprietary ECU tune and higher efficiency intercooler pump for increased

CLASS C SW (S 204) 300 [2 Filters Required] (HP: 231 | Year: 09 >)

RENNtech ECU Upgrade | C253 | GLC 43 AMG | Coupe | 400 HP / 440 LB-FT | M276 | 3.0L V6 BiTurbo | MY2016-2022 mercedes-benz-g-class--463---1990-2018--g-55-amg-esr4572509 and these beautifully crafted additionsThe RENNtech ECU upgrade brings the GLC 43 AMG Coupe up to 400 HP and 440 LB FT Gains: +25 HP and +42 LB FT. RENNtech tuning products are certified to meet CARB standards in all 50 States. 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