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RENNtech | ECU Upgrade | McLaren MP4-12C | 644HP / 487 LB-FT

RENNtech ECU Upgrade for the McLaren MP4-12C. Up to 644HP and 487TQ.
Gains: +44 HP & +44LB-FT
Retail price without tax: $4,890.00

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 software for McLaren offers significant gains in horsepower and torque across the vehicles entire power band. By modifying ignition timing and throttle mapping, optimizing air/ fuel ratios, increasing the engines rev limiter and modifying boost mapping for turbo charged vehicles, RENNtech performance software unleashes your McLarens" true potential.


McLaren MP4-12C Stock Performance:

  • 600 HP @ 7500rpm / 443 LB-FT @ 3000-7000rpm


Modified Performance:

  • 644 HP / 487 LB-FT



  • +44 HP / +44 LB-FT


Contact us

7825 SW Ellipse Way, Stuart, FL 34997
(+1) 561 - 845 7888
Mon - Fri 9am - 6pm


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7825 SW Ellipse Way - Stuart, FL 34997
TEL: 561.845.7888 FAX: 561.845.6777 E-MAIL: