RENNtech ECU+ Upgrade | X166 | GL63 AMG | SUV | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo mclaren-720s-esr3513048 G63 AMG (MY2019+ | W463

G63 AMG (MY2019+ | W463 | M177 | 4

Rated by RENNtech (peak @wheel):              337 whp @ 4

Dyno measured by RENNtech (peak):               526 HP @ 6

2018-2021 Maybach C217 S560

RENNtech Motorsports T-Shirt

RENNtech ECU+ Upgrade | X166 | GL63 AMG | SUV | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo mclaren-720s-esr3513048 G63 AMG (MY2019+ | W463ECU+ 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