RENNtech ECU Hand Held Tuner | HHT | C219 | CLS55 AMG Kompresspr | 517HP/552LB-FT | 5.5L Kompressor | M113 |MY2005-2006 bmw-m3--f80---2014-2018--3-0-liter-inline-six-engine-featuring-twin-turbocharging-esr1868515 GLC 43 AMG Coupe (C253

GLC 43 AMG Coupe (C253 | M276 | 3

0 (USA) (HP: 306 | Year: 09 > 10)

Each wing element is expertly crafted in Germany

Our proprietary ECU upgrade for the Mercedes M276 engine offers huge gains in performance across the entire RPM range without sacrificing around-town comfort or daily driver reliability

549 awhp @ 5

RENNtech ECU Hand Held Tuner | HHT | C219 | CLS55 AMG Kompresspr | 517HP/552LB-FT | 5.5L Kompressor | M113 |MY2005-2006 bmw-m3--f80---2014-2018--3-0-liter-inline-six-engine-featuring-twin-turbocharging-esr1868515 GLC 43 AMG Coupe (C253RENNtech ECU HHT (HandHeldTuner) for the 219 CLS55 AMG Kompressor. Up to 517HP and 552LB FT. Gains: +48HP & +36TQ. RENNtech tuning products are certified to meet CARB standards in all 50 States. 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