2011 - 2013 Mercedes Benz S550 - M278 V8 Bi-turbo 4.7L - Performance ECU Tuning M54 - 2017-2020 BMW 430i /

- 2017-2020 BMW 430i / 430i xDrive / 430i Gran Coupe

Option 3: I will mail in my DDE/ ECU for coding: You can remove the DDE / ECU and mail it here for injector coding

N54 and N55 engines

If you own a Mercedes-Benz W218 CLS400 and require a reliable solution for ECU repair or replacement

7000rpm rev limiter (can be changed upon request to your specs)

2011 - 2013 Mercedes Benz S550 - M278 V8 Bi-turbo 4.7L - Performance ECU Tuning M54 - 2017-2020 BMW 430i /Performance 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