ECU+ Upgrade M176 4.0L V8 BiTurbo

The RENNtech ECU+ Upgrade is a performance enhancement for the Mercedes-Benz W222 S560, specifically for models equipped with the 4.0L V8 BiTurbo M176 engine from 2018 to 2020. This upgrade utilizes RENNtech's proprietary tuning software to significantly boost horsepower and torque across the vehicle's entire power band by adjusting ignition timing, throttle mapping, air-to-fuel ratios, rev limiter, and boost mapping for turbocharged applications. The RENNtech HHT (hand-held tuner) allows for seamless switching between the tuned file and the vehicle's stock ECU programming without requiring the ECU to be removed. The module connects directly to the OBD2 port for programming, which takes only a few minutes and can be repeated as often as needed. RENNtech has extensive experience in ECU tuning, ensuring performance gains with reliable daily driver performance. This tuning module is certified to meet CARB standards and is street legal in all 50 states, conforming to EPA Emissions Standards and not reducing the effectiveness of original pollution control systems. With this ECU tuning, the W222 S560 can achieve up to +100 HP and +102 LB-FT over its stock performance, reaching a maximum of 584 HP and 642 LB-FT. It is important to note that the M176 engine often performs higher than factory ratings. This performance upgrade mandates the use of 93+ Octane gasoline, and states with poor fuel quality may require a lower power setup. Crank performance numbers are calculated with a 14% drivetrain loss on RWD vehicles.