hairpin?
u mean in track those kinda hairpin?
or just a simple handbrake u turn?
i've read b4 in other forums, to do a handbrake u turn, you gotta
be in 2nd gear. drop your revs to like 4-5k, pull hand brake and
turn at the same time. clutch in, switch to 1st gear, rev, release
clutch, release hand brake, accelerate.