M113 5.4L ECU Tune

ECU Tuning Process: How do I get my ECU tuned? The M113 engine is a potent powerplant.  Through rigorous testing, on both the street and dyno, the Weistec M113 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
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 Mercedes Benz for a much more enjoyable experience for you.  
ECU Tuning Process: How do I get my ECU tuned? 
Key Features:
Eliminated Top Speed Limiter
Improved Throttle Response
Optimized Fuel, Spark, and Boost
Signitigant Horsepower and Torque Gains
*Power gains vary based on model, modifications, fuel, and running conditions.