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SL 63 AMG (R231 | PFL MY2012-14 | RWD | M157 | 5
Rated by RENNtech (peak @crank): 712 HP @ 5
Power and torque delivery are improved across the rev range
The SLR Mclaren Performance Exhaust consists of RENNtech Stainless Steel Headers and RENNtech Stainless Steel Sport Mufflers with 200 cell Catalytic Conveters
R1 Performance Package for McLaren 650S alfa-romeo-stelvio-quadrifoglio--949---2018-2023--2-9-bi-turbo-v6-esr9101504 SL 63 AMG (R231 |R1 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
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