FabSpeed McLaren 650S ExperTune Performance Software

ExperTune Performance software upgrade improves horsepower, torque, and driving characteristics by reprogramming various sensor inputs, air/fuel ratios, and boost pressure. Achieve maximum power from the McLaren 3.8L Twin Turbo V8 without sacrificing driveability or reliability by optimizing the engine's performance. Greatly enhances the power and dynamic performance and driveability of this wonderful vehicle. Maps are available for completely stock cars, or for cars equipped with Sport Cats, Cat Bypass Pipes, Exhausts, upgraded turbos, and more.  Once we receive your ECU, our tuner bench flashes it with the upgraded ExperTune map and we return it to you for easy re-installation; no modifications to the vehicle are necessary.      POWER GAINS Stock = 650 HP / 500 TQ Tuned = 700 HP / 546 TQ  Peak power gains of 26 whp and 27 ft-lbs of torque Gains of 33 whp and 44 ft-lbs of torque at 4000 RPM NOTES This is not a physical/shipped product.  This upgrade requires you to send us