RENNtech | ECU Upgrade | McLaren MP4-12C | 644HP / 487 LB-FT mercedes-benz-sl-class--230---2007-2011--sl-65-amg-esr6280537 which is regulated through the

which is regulated through the M6’s settings

Solid colors vary in shade and smoothness

417 hp @ 5

Options: Valve Stems Upgrade Lug Bolts Titanium or Black  TPMS  Upgrade Center Caps Design V1 | Design V2 Tires Mounted and Balanced  Available: Street or Track spec

550 LB-FT @ 3

RENNtech | ECU Upgrade | McLaren MP4-12C | 644HP / 487 LB-FT mercedes-benz-sl-class--230---2007-2011--sl-65-amg-esr6280537 which is regulated through theRENNtech 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