Fabspeed McLaren 720S XperTune Performance Software

Achieve maximum power gains (79 whp and 113 ft-lbs of torque at 3700 RPM) without sacrificing drivability or reliability. Maps are available for completely stock cars, or for cars equipped with Sport Cats, Cat-bypass Pipes, X-Pipe Exhausts, upgraded turbos, and more.                                             Once we receive your ECU, our tuner bench flashes it with the upgraded ECU map and we return it to you for easy re-installation; no modifications to the vehicle are necessary.      POWER: Maximum curve gains of 79 whp and 113 ft-lbs of torque at 3700 RPM Stock Peak Power: 689 WHP and 556 TQ | Tuned Peak Power: 782 WHP and 639 TQ  NOTES This upgrade requires you to send us your ECU for re-programming. You will be emailed a download link with detailed instructions after adding this to your cart and checking out. You must fill out and include a copy of the ECU Information form along with your ECU upon sending it in. Please contact us if you need to send the form in any other mann