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 93 Octane or higher gasoline

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

Power gains are calculated based on the peak stock performance measured by RENNtech

increasing exhaust gas flow and cylinder scavenging

up to an astonishing 427 HP and 453 lb/ft at the crank

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

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 93 Octane or higher gasolineRENNtech 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