RENNtech ECU+ Upgrade | X253 | GLC 43 AMG | SUV | 416 HP / 460 LB-FT | M276 | 3.0L V6 BiTurbo | MY2016+ mercedes-benz-gt-4-door-coupe--290---2019-present--gt-43-amg-esr1573433 450rpm Note: Mercedes M177 engine

450rpm Note: Mercedes M177 engine performance when measured on the dyno obtains higher power numbers than rated from factory

Flying Spur Speed (MY2022+)

RENNtech Pre-Preg Carbon Fiber Side Skirts for 197 - SLS AMG

Reduce fading

The HHT can be purchased in our online store

RENNtech ECU+ Upgrade | X253 | GLC 43 AMG | SUV | 416 HP / 460 LB-FT | M276 | 3.0L V6 BiTurbo | MY2016+ mercedes-benz-gt-4-door-coupe--290---2019-present--gt-43-amg-esr1573433 450rpm Note: Mercedes M177 engineRENNtech ECU Plus Upgrade for X253 GLC 43 AMG SUV. The ECU Plus Upgrade brings the GLC 43 AMG SUV up to 416 HP and 460 LB FT. Gains: +41 HP and +62 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