Mercedes-AMG S63 E Performance (W223) | RENNtech | RPM ECU Upgrade | 890 HP and 1062 LB-FT TQ mercedes-benz-c-class--204-sedan---2008-2014--c-320-cdi-esr4861286 RENNtech Pre-Preg Carbon Fiber Rear

RENNtech Pre-Preg Carbon Fiber Rear Diffuser for the 219 - CLS Class

Maserati Quattroporte S (Q4) (M157) 2018+

Our proprietary ECU upgrade for the Mercedes M137 engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability

RENNtech Carbon Fiber Quality Control

Produced in Europe

Mercedes-AMG S63 E Performance (W223) | RENNtech | RPM ECU Upgrade | 890 HP and 1062 LB-FT TQ mercedes-benz-c-class--204-sedan---2008-2014--c-320-cdi-esr4861286 RENNtech Pre-Preg Carbon Fiber RearRENNtech Power Module ECU Upgrade for Mercedes AMG S63 E Performance (W223) M177 w Electric Drive 890 HP and 1062 LB FT TQ RENNtech Power Module (RPM) ECU tune increases horsepower and torque across the entire power band. By modifying ignition timing, throttle mapping, optimizing air to fuel ratios of the 4. 0 liter BiTurbo V8 engine (M177) found in the Mercedes AMG S63 E Performance vehicles. The RPM is contained in a CNC machined 6061 aluminum case