It really hard to explain whats happens but i'll give it a go:
Sometimes when I take off at the lights i change from 1st to second, when it hits about 2500 or 3000 the car just loses power and the revs just die then it will pick right back up to where it left off and keep running normally, or it will do it again when i change from second to third.
could it be the turbo?
any advice would be greatly appreciated