RENNtech ECU Upgrade | C207 | E 550 Coupé 2014+ | 540HP / 705 LB-FT | 4.7L V8 BiTurbo | M278 | MY2014-2017 bentley-flying-spur--2020-present--4-0l-v8-tfsi-esr8250520 Carrera GTS

Carrera GTS

With the proprietary RENNtech ECU Tuning the C217 - S560 gains up to +100 HP and +102 LB-FT

Range Rover (L322/LM) 2009 – 2012

We have found the M157 engine stock performance numbers vary from the baseline figures claimed by Mercedes Benz

C238 - E-Class Coupe E400 BiTurbo Coupe | MY2017+

RENNtech ECU Upgrade | C207 | E 550 Coupé 2014+ | 540HP / 705 LB-FT | 4.7L V8 BiTurbo | M278 | MY2014-2017 bentley-flying-spur--2020-present--4-0l-v8-tfsi-esr8250520 Carrera GTSRENNtech ECU Upgrade for 207 E 550 BiTurbo 2014+ FaceLift. Up to 540HP and 705 LB 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