R1 | Performance Package | W205 - C63 /S AMG | 611 HP / 672 LB-FT | 4.0L V8 BiTurbo | M177 porsche-cayenne--92a---2011-2018--turbo-esr5408863 Gains: Up to +69HP |

Gains: Up to +69HP | +50LB-FT

CLASS E (W 212) 550 [2 Filters Required] (HP: 408 | Year: 11 > )

Bentley GT

and TCU upgrade: Up to +186HP | +111LB-FT

R1 | Performance Package | W205 - C63 /S AMG | 611 HP / 672 LB-FT | 4.0L V8 BiTurbo | M177 porsche-cayenne--92a---2011-2018--turbo-esr5408863 Gains: Up to +69HP |RENNtech R1 Performance Package for the W205 C 63 AMG. Including: ECU, Sport Muffler, BOV Adapter. Up to: 611 HP 672 LB FT RENNtech has been at the forefront of ECU tuning since electronic engine management started to show up in vehicles during the mid 1980s! Our experience, countless hours of in house research, development and exhaustive testing ensure that our proprietary ECU upgrade offers incredible performance gains and rock solid daily driver