RENNtech ECU Upgrade | Rolls Royce Wraith | 712HP/774LB-FT bentley-bentayga--2016-present--6-0l-twinturbo-w12-esr8256580 X253 - GLC63 AMG Coupe

X253 - GLC63 AMG Coupe

205 - C-Class Sedan non-AMG | MY2015+

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

The maximum power number reached with the RENNtech ECU+ Upgrade for the W205 - C 63 AMG is up to 601 HP and 657 LB-FT

RENNtech ECU Upgrade | Rolls Royce Wraith | 712HP/774LB-FT bentley-bentayga--2016-present--6-0l-twinturbo-w12-esr8256580 X253 - GLC63 AMG CoupeRENNtech ECU Upgrade for Rolls Royce Wraith. Up to 712 HP 774 LB FTGains: +95HP & +90LB FT Our proprietary Rolls Royce ECU upgrade offers rock solid performance from RENNtech, the foremost tuning authority on Bosch and Siemens engine control units. These same units are utilized in Mercedes Benz vehicles, which RENNtech has been tuning since electronic engine management started to show up in vehicles during the mid 1980's, though our tuning software