RENNtech Smart Car ECU Upgrade (69HP/66LB-FT) mercedes-benz-cla-class--118---2020-present--cla-35--amg-esr2775909 This system is a completely

This system is a completely new design

Rated by Mercedes-Benz:      537 HP @ 5

aggressive

679 wtq @ 4

Software updates do not interfere with the functionality of the EVM

RENNtech Smart Car ECU Upgrade (69HP/66LB-FT) mercedes-benz-cla-class--118---2020-present--cla-35--amg-esr2775909 This system is a completelyRENNtech Smart Car ECU Upgrade. Up to 69HP and 66LB FT. Gains: +5HP & +5LB FT Our proprietary SMART ECU upgrade offers rock solid performance from RENNtech, the foremost tuning authority on Bosch and Siemens engine control units. These same units are utilized in Mercedes Benz vehicles, which RENNtech has been tuning since electronic engine management started to show up in vehicles during the mid 1980's, though our proprietary tuning software and