McLaren 720S ECU Tuning SoftwareOverview McLaren 720S 4. 0 L V8 Twin Turbo2017 Present Expertly calibrated and meticulously refined, HEX Tunings ECU software for the McLaren 720S 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 additional ft. lbs. of torque through the mid range, acceleration out of your favorite corner and