RENNtech ECU+ Upgrade | W166 | ML63 AMG | SUV | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo aston-martin-dbx--2021---v8-m177-esr3550609 5 V12 (W240

5 V12 (W240

216 - CL 63 AMG BiTurbo

RENNtech M157 Biturbo ECU+ Upgrades are TÜV approved

Rated by Mercedes-Benz:      518 HP @ 5

RENNtech ECU+ Upgrade | W166 | ML63 AMG | SUV | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo aston-martin-dbx--2021---v8-m177-esr3550609 5 V12 (W240ECU+ Upgrade Up to 669HP 734LB FT Gains: +95HP & +111LB 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. Programming takes only a few minutes and the vehicle can