Fabspeed Tuning

McLaren MP4-12C XperTune Performance Software


XperTune Performance software upgrade improves horsepower, torque, and driving characteristics of the McLaren MP4-12C by reprogramming various sensor inputs, air/fuel ratios, and boost pressure. Achieve maximum power from the 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.


Fits all McLaren MP4-12C 3.8L Twin Turbo V8 vehicles (2011+)

Stock = 555 whp / 429 ft-lbs

Tuned = 606 whp / 496 ft-lbs

Maximum gains of over 92 whp and 82 ft-lbs of torque at 5900 RPM

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.

While a vehicle equipped with bolt-on upgrades will experience maximum gains as a result of the increased efficiency of the engine, great power gains can be made on a completely stock vehicle!

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 manner.

Fabspeed Motorsport saves your stock/factory ECU settings so that you can revert your vehicle back to stock settings at any time.

Special requests and tune file upgrades may be subject to additional fees.