FabSpeed McLaren 675LT ExperTune Performance Software

Achieve maximum power gains (~66 whp & 43 ft-lbs) without sacrificing driveability or reliability. Maps are available for completely stock cars, or for cars equipped with Sport Cats, Cat Bypass Pipes, 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 Stock = 582 whp / 490 ft-lbs Tuned = 629 whp / 516 ft-lbs Tune + Fabspeed Sport Catalytic Converters = 635 whp / 526 ft-lbs Maximum gains of over 65 whp and 43 ft-lbs of torque at 8000 RPM NOTES This is not a physical/shipped product. 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