R1 | Performance Package | C205 - C63 /S AMG | 611 HP / 672 LB-FT | 4.0L V8 BiTurbo | M177 mercedes-benz-slk-class--172---2011-2020--slk-55-amg-esr4729687 RENNtech HHT ECU Upgrade for

RENNtech HHT ECU Upgrade for 197 - SLS AMG

Gains up to: +60 HP | +57 LB FT

Intermediate ECU Upgrade | Up to 638HP / 695LB-FT | Gains: +33HP & +49LB-FT

Dyno measured by RENNtech:               484 HP @ 5

The end result is nothing short of spectacular with the RENNtech turbo package gaining up to 228 hp and 182 lb-ft

R1 | Performance Package | C205 - C63 /S AMG | 611 HP / 672 LB-FT | 4.0L V8 BiTurbo | M177 mercedes-benz-slk-class--172---2011-2020--slk-55-amg-esr4729687 RENNtech HHT ECU Upgrade forRENNtech 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