Weistec Mercedes M278 ECU Tune | 01-278-00828-6

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.

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.

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