RENNtech ECU+ Upgrade | C253 | GLC 43 AMG | Coupe | 416 HP / 460 LB-FT | M276 | 3.0L V6 BiTurbo | MY2016+ mercedes-benz-a-class--177---2019-present--a-45-amg-esr8335683 Rated by RENNtech: 545 HP

Rated by RENNtech:               545 HP @ 6

Rated by Mercedes-Benz:      577 HP @ 5

85 mph W213 - E63 AMG S Sedan Rt ECU Upgrade w/Launch Control 2

0L V12 BiTurbo) Modified Performance (at crank):

Recommended use with RENNtech Front Strut Brace : 32

RENNtech ECU+ Upgrade | C253 | GLC 43 AMG | Coupe | 416 HP / 460 LB-FT | M276 | 3.0L V6 BiTurbo | MY2016+ mercedes-benz-a-class--177---2019-present--a-45-amg-esr8335683 Rated by RENNtech: 545 HPThe RENNtech 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 file you choose directly to the ECU.