McLaren MP4-12C ECU Tuning SoftwareOverview McLaren MP4 12C 3. 8L V8 Twin Turbo 2011 2014 Expertly calibrated and meticulously refined, HEX Tunings ECU software for the McLaren MP4 12C is guaranteed to give you MORE of a good thing. More horsepower, more torque, and a more exhilarating driving experience by delivering usable power through improved throttle response and torque management. With as much as 100+ extra ft. lbs. of torque through the mid range, acceleration out of your