Not trying to be a smart A$$, how long have you owned the car for? The M has plenty of power to spin the rear-end but its not a 5.0L mustang and its not made for that. I really do understand what your getting at but you need to drive your M the way it was meant to be driven, roads with nice turns. Try and find some track events where you can really see her shine. Like someone mentioned bimmerworld, epic tune or evolve are your most talked about tunes with great reviews with mods.
Last edited by duramax; 02-05-2013 at 06:24 AM.