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Mercedes-Benz

M278 ECU Tune
Purchase M278 ECU Tune
  • SKU: M278-ECU-Tune

    M278 ECU Tune

  • Gains are at the engine or "crank". Actual gains are dependent on the model, model year, fuel octane, engine health, and environmental conditions. Learn More

  • $1,499.99

  • CARB EO: D-691-1
  • Prop 65 warning
    Warning

    This product can expose you to chemicals including carbon black, silica - crystalline, formaldehyde, and lead which are known to the State of California to cause cancer, and lead, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Weistec Horsepower 540
Weistec Torque 715
CARB Exempt ID D-691-1
Manufacturer Weistec
Street legal in all the US States Yes
Engine Family M278
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year make model trim engine
2020 Mercedes-Benz SL550 Base (R231) Twin Turbo 4.7L V8 (M278)
2019 Mercedes-Benz SL550 Base (R231) Twin Turbo 4.7L V8 (M278)
2018 Mercedes-Benz SL550 Base (R231) Twin Turbo 4.7L V8 (M278)
2017 Mercedes-Benz SL550 Base (R231) Twin Turbo 4.7L V8 (M278)
2016 Mercedes-Benz SL550 Base (R231) Twin Turbo 4.7L V8 (M278)
2015 Mercedes-Benz SL550 Base (R231) Twin Turbo 4.7L V8 (M278)
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540 Horsepower, 715 Ft-Lbs Torque!

As an industry leader in tuning and calibration, Weistec Engineering is proud to introduce the much anticipated ECU tune for the bi-turbo M278 vehicle lineup. After months of painstaking dyno and road tuning, we are proud to introduce the most powerful ECU upgrade ever released for the M278 engine. Fully developed in house, our ECU tune has surpassed the 540 horsepower* mark on a completely stock vehicle with no other modifications.

CARB EO# D-691-1

With a keen understanding for optimal running conditions for the M278, we have revised many features of the factory ECU programming which creates an astounding 540 horsepower* and 715 torque* at the engine on California pump 91 octane all while being street legal.

 

ECU Tuning Process: How do I get my ECU tuned?

Key Features:

  • 540 Horsepower*

  • 715 Ft-Lbs Torque*

  • Eliminate Top Speed Limiter*

  • Increased Throttle Response

  • Optimized Boost, Fuel and Spark


*Results vary based on model and modifications.