RENNtech ECU+ Upgrade | S212 | E 63 (S) AMG | Wagon | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2014-2016 mercedes-benz-glc-class-coupe--253---2016-present--glc-63-amg-esr1091906 Our proprietary ECU+ upgrade for

Our proprietary ECU+ upgrade for the Mercedes M157 engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability

Upgrade the look of AMG GT Black Series with RENNtech Carbon Fiber Fender Extractor Inserts

up to an astonishing 392 HP and 463 lb/ft at the crank

465 whp @ 4

All of our designs are unique and fully developed in-house by our skilled engineers and designers

RENNtech ECU+ Upgrade | S212 | E 63 (S) AMG | Wagon | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2014-2016 mercedes-benz-glc-class-coupe--253---2016-present--glc-63-amg-esr1091906 Our proprietary ECU+ upgrade forECU+ Upgrade Up to 669HP 734LB FT Gains: +65HP & +88LB FT RENNtech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal! Our proprietary tuning module stores both the RENNtech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port and delivers the file you choose directly to the ECU. Programming takes only a few minutes and the vehicle can be