ECU Upgrade Kit for Mercedes-Benz W463 G 63 AMG 5.5L M157

The RENNtech ECU Upgrade is a sophisticated computer chip and module programmer specifically engineered for the Mercedes-Benz W463 G 63 AMG equipped with the 5.5L biturbo V8 M157 engine. This ECU upgrade transforms your G 63 AMG's performance, taking it from its stock output of 536 HP and 560 lb-ft of torque to an impressive 635 HP and 620 lb-ft of torque. This represents a gain of approximately 99 HP and 60 lb-ft of torque. The system utilizes RENNtech's proprietary tuning module, which stores both the tuned file and your vehicle's original stock file. The module conveniently plugs directly into the OBD2 port, allowing for easy switching between the tuned and stock ECU programming without the need to remove the ECU itself. This offers a versatile solution for performance tuning. The Hand Held Tuner (HHT) is included with this upgrade, providing the user with the unlimited ability to switch between the RENNtech tuned file and the vehicle's stock ECU programming. This feature offers flexibility and convenience for the driver. The product also comes with a 2-year warranty and a 90-day return policy.