RENNtech | ECU Upgrade | C 400 | W205 | 392HP/432LB-FT | 3.0L BiTurbo V6 | M276 | MY2015-2022 mercedes-benz-gle-class-coupe--292---2016-2020--gle-63-amg-esr5941045 We have found the M176

We have found the M176 engine stock performance numbers vary from the baseline figures claimed by Mercedes Benz

GT 53 AMG (X290 -chassis)

with the highly accurate pre-preg carbon fiber manufacturing process

The ECU upgrade for the Mercedes M278 Biturbo engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability

Roma (MY2020+)

RENNtech | ECU Upgrade | C 400 | W205 | 392HP/432LB-FT | 3.0L BiTurbo V6 | M276 | MY2015-2022 mercedes-benz-gle-class-coupe--292---2016-2020--gle-63-amg-esr5941045 We have found the M176RENNtech ECU Upgrade for 205 C 400 BiTurbo 4 MATIC. Up to 392HP and 432LB FT. Gains: +63HP & +79LB FT RENNtech M276 Biturbo ECU Upgrades are TV approved! 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