R1 Performance Package for McLaren 650S mercedes-benz-slk-class--171---2004-2010--slk-55-amg-esr5743216 the craftsmanship and coating finish

the craftsmanship and coating finish on the system is a joy to behold

upgraded CPC Unit and Fuel System Upgrade

Current Consumption: 30mA (60mA while plugged in to PC/Tablet)

The maximum power number reached with the RENNtech ECU Upgrade for the AMG GT R is 659 HP and 614 LB-FT

R1 Performance Package for McLaren 650S mercedes-benz-slk-class--171---2004-2010--slk-55-amg-esr5743216 the craftsmanship and coating finishR1 Performance Package for the McLaren 650S. Includes RENNtech ECU Upgrade and Akrapovic Slip On Titanium Exhaust System. RENNtech has been at the forefront of ECU tuning since electronic engine management started to show up in vehicles during the mid 1980's! 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