2011 - 2013 Mercedes Benz S550 - M278 V8 Bi-turbo 4.7L - Performance ECU Tuning ECU CLONING With the EWS delete

With the EWS delete

C63 AMG (6

Stage 1 tune: +96WHP @ 5800RPM +106WTQ @ 3000RPM wide range at the wheels

Stage 1 tune - +30WHP +40WTQ at the wheels

2011 - 2013 Mercedes Benz S550 - M278 V8 Bi-turbo 4.7L - Performance ECU Tuning ECU CLONING With the EWS deletePerformance Flash Tune for Mercedes Benz S550 W221 with M278 4. 7L V8 Bi Turbo Engine with MED17. 7. 1 MED17. 7. 3 ECU. S550 M278 Performance Flash Tune Stage 1 gains: 76WHP @ 3500RPM 118WTQ @ 3500RPM Performance tuning modifies torque limiter maps, boost levels, fuel maps, ignition timing advance maps and more. All to help safely increase HP TQ, while keeping good drive ability and factory fail safes limp protection in place. Factory emissions remain