RENNtech ECU Upgrade | W212 | E 63 S AMG | Sedan | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2014-2016 bentley-continental-gt-speed--2011-2018--6-0l-w12-ea398-twin-turbo-esr2694718 The maximum power number reached

The maximum power number reached with the RENNtech ECU Plus Upgrade for the C253 - GLC 43 AMG Coupe is 416 HP and 460 LB-FT

8L V12 Engine) Modified Performance:

DBX Straight Six

W205 - C-Class Sedan C300 | MY2019+

CLS 53 AMG (C257 -chassis)

RENNtech ECU Upgrade | W212 | E 63 S AMG | Sedan | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2014-2016 bentley-continental-gt-speed--2011-2018--6-0l-w12-ea398-twin-turbo-esr2694718 The maximum power number reachedECU Upgrade Up to 638HP 695LB FT Gains: +33HP & +49LB FT RENNtech M157 Biturbo ECU Upgrades are TV approved! Our intermediate level ECU upgrade for the Mercedes M157 Biturbo 4 MATIC engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability. This is ideal for customers who want increased performance in their daily driver without worry of extra strain on driveline components