FabSpeed McLaren 720S ExperTune Performance Software

Achieve maximum power gains (104 WHP and 142 TQ at 3800 RPM) without sacrificing driveability 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 GAINS WHP: +104 | TQ: +142 Maximum gains of over 104 whp and 142 ft-lbs of torque at 3800 RPM Stock Peak Power: 640 WHP and 559 TQ | Tuned Peak Power: 709 WHP and 663 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