After an intensive 2 month development program, we have finalized Mclaren GT Development. Fabspeed is proud to release our Supersport X-Pipe, HJS High Flow Sport Cats, and Xpertune software. Together these upgrades result in an increase of 150 ft/lbs of TQ and 115 WHP! The effect is a more befitting exotic and aggressive Mclaren sound, rather than a Dyson vacuum!