RENNtech | ECU+ Upgrade | G550 | W463 | 523 HP / 583 LB-FT | 4.0L BiTurbo V8 | M176 | up to MY2018 mercedes-benz-cl-class--216---2007-2014--cl-600-esr6559467 RENNtech ECU Plus Upgrade for

RENNtech ECU Plus Upgrade for C292 - GLE 43 AMG Coupe

RENNtech is proud to introduce an all new rear decklid spoiler design for the Mercedes-Benz CLS Coupe

RENNtech ECU HHT (HandHeldTuner) for the 219 - CLS 500

The end result is nothing short of spectacular with the RENNtech turbo package making up to an incredible 460 HP and 415 TQ at the crank

479 LB-FT @ 4750 RPM

RENNtech | ECU+ Upgrade | G550 | W463 | 523 HP / 583 LB-FT | 4.0L BiTurbo V8 | M176 | up to MY2018 mercedes-benz-cl-class--216---2007-2014--cl-600-esr6559467 RENNtech ECU Plus Upgrade forECU+ Upgrade 523HP 583TQ Gains: +102HP +128TQ 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 reflashed