M177 ECU Tune W.1 Weistec (GLC63, C63)

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All 2020 models require bench flashing at this time.

The M177 engine is a potent power plant.  Through rigorous testing, on both the street and dyno, the Weistec M177 ECU Upgrade reliably extracts massive gains in the mid range of the powerband as well as substantial gains in the top end making it a top performer in all driving situations

Weistec M177 ECU Power 

What does all this mean to you?  More power, sharper throttle response, and a complete focus on the driver makes this the perfect addition to your AMG for a much more enjoyable experience for you. 

Key Features:

• Eliminated Top Speed Limiter**

• Improved Throttle Response

• Optimized Fuel, Spark, and Boost

• Sustainable Horsepower and Torque gains with just Air Filters

• Even larger gains with Air Filters and Downpipes