R1 | Performance Package | C205 - C63 /S AMG | 611 HP / 672 LB-FT | 4.0L V8 BiTurbo | M177 porsche-911--991-1---2011-2016--turbo-esr5301476 CLASS R LONG (W 251)

CLASS R LONG (W 251) 350 [2 Filters Required] (HP: 272 | Year: 07 > 10)

Up to 370HP and 410 LB-FT

93 Octane or higher gasoline has to be used with R1 upgraded RENNtech vehicles to avoid damage to the engine and reach the claimed power levels

RENNtech Power Module ECU-Upgrade for Mercedes-AMG SL 55 & GT 55| C192 & R232 | 4

W463 - G550 4x4² BiTurbo (MY2017+)

R1 | Performance Package | C205 - C63 /S AMG | 611 HP / 672 LB-FT | 4.0L V8 BiTurbo | M177 porsche-911--991-1---2011-2016--turbo-esr5301476 CLASS R LONG (W 251)RENNtech R1 Performance Package for the C205 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