Pay in 4 interest-free payments of $78.12 Learn more
Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
Horsepower: +40WHP
"No start in 200 miles
BMW N63 with MSD85 Performance ECU tuning software
Stage 1 tune: +96WHP @ 5800RPM +106WTQ @ 3000RPM wide range at the wheels
Comprehensive support
2011 - 2013 Mercedes Benz S550 - M278 V8 Bi-turbo 4.7L - Performance ECU Tuning ECU CLONING Horsepower: +40WHPPerformance 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
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