McLaren 600LT XperTune Performance Software 1976 75in / 70mm which is

75in / 70mm which is the optimal diameter for GT3 engines to have low restriction but maintain high velocity and high RPM GT3 pitch for the signature GT3 CUP car sound

These lightweight

This is a very loud and aggressive exhaust system

No matter what road you take

Saves 8lbs / 3

McLaren 600LT XperTune Performance Software 1976 75in / 70mm which isAchieve maximum power gains (~80+ whp & 80 ft lbs) without sacrificing drivability or reliability. Maps are available for completely stock cars, or for cars equipped with Sport Cats, Catbypass Pipes, X Pipe Exhausts, upgraded turbos, and more. You wouldn't believe all the power that's waiting to be unlocked in your 600LT. We've had ample time with a 600LT on our in house Dynojet to unlock extra power on both stock vehicles and optimize performance