its gonna be hard to do it fast...but its like a longer clutch kick:

as you are about to enter the corner...shift from second or whatever..into neutral...feint (or not..feinting just makes it harder)..and as you're about to feint back to the turn, rev up in neutral, shift back to second or whatever you were in..and slide into the corner...

or you could just go straight..and when you're about to hit the corner..go into neutral, rev, pop it back into whatever gear, and youll lose traction