RENNtech | ECU Upgrade | McLaren MP4-12C | 644HP / 487 LB-FT mercedes-benz-sl-class--230---2007-2011--sl-65-amg-esr6280537 Solid colors vary in shade

Solid colors vary in shade and smoothness

While slippage in the torque converter is important under acceleration

1 at 6750 rpm 631

550 LB-FT @ 3

5"  Weight:   Construction: 1-piece Forged Tire Size: 295/35/20

RENNtech | ECU Upgrade | McLaren MP4-12C | 644HP / 487 LB-FT mercedes-benz-sl-class--230---2007-2011--sl-65-amg-esr6280537 Solid colors vary in shadeRENNtech ECU Upgrade for the McLaren MP4 12C. Up to 644HP and 487TQ. Gains: +44 HP & +44LB FT 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 reliability. RENNtech tuning