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RENNtech is pleased to announce our proprietary ECU upgrade for the Mercedes M133 engine that offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability. The end result is nothing short of spectacular with the RENNtech ECU upgrade making up to an incredible 428 HP and 417 TQ at the crank!
Our Piggyback is still available but now RENNtech is ready to tune your CLA 45. Tuning the ECU allows us to do a more complete modification of the vehicle’s performance including drivability adjustments, shift improvements, speed limits, torque control and response times.
This ECU Upgrade is also available for the 156 - GLA and 176 - A Class.