2013 - 2020 Mercedes Benz SL550 - M278 V8 Bi-turbo 4.7L - Performance ECU Tuning N55 Please email with inquires

Please email with inquires

We may also have an alternative to change the VIN and disable the IMMOBILIZER from the donor ECU when possible

Stage 1 N63 550i ECU Tune improvements on stock hardware:

- 2014 - 2018 BMW F80 M3 - Sedan - S55B30 - USA - 7 Speed DCT Transmission

the powerful S550

2013 - 2020 Mercedes Benz SL550 - M278 V8 Bi-turbo 4.7L - Performance ECU Tuning N55 Please email with inquiresPerformance Flash Tune for Mercedes Benz SL550 R231 with M278 4. 7L V8 Bi Turbo Engine with MED17. 7. 1 MED17. 7. 3 ECU. SL550 M278 Stage 1 Performance Tune 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