Weistec Mercedes-Benz M157 ECU Tune W.2 (Race Exhaust Fitted)

Stage 2

Weistec Horsepower: 760

Weistec Torque: 852

Manufacturer: Weistec

Street Legal In All The US States: NO

Engine Family: M157

Stock Horsepower: 549

Stock Torque: 531

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

As the global leader in Mercedes Benz AMG Tuning, Weistec Engineering sets the performance standard for bi-turbo M157 performance calibration. Designed in-house by our expert tuning staff, our M157 ECU tune has surpassed the 600 wheel horsepower mark on a completely stock vehicle with no other modifications. This tune is also 100% street legal!

Stock vs Westec ECU and Filters

CARB EO# D-691-1

With a keen understanding for optimal running conditions for the M157, we have revised many features of the factory ECU programming which creates an astounding crank horsepower and torque increases on California pump 91 octane fuel all while being street legal.

The tune can be installed with the optional Cypher Handheld Tuner or simply shipping the ECU to our Southern California Facility.

Key Features:

• Increased Wheel Horsepower
• Increased Wheel Torque
• Eliminate Top Speed Limiter
• Improved Throttle Response
• Optimized Boost, Fuel and Spark
• CARB Legal
• All OBD Monitors Function as Stock

*Power gains vary based on model, modifications, fuel, and running conditions.