I have a strange problem.

My car drives fine with a gentle throttle, economy is good low noise levels etc as it has for the 2 years I've had it.

However. when I accelerate hard the rev counter rises by 1500rpm, then the car starts to accelerate and the revs hold at the high level. After a second or so the car pulls hard and seems fine.

Its just the revs rising before it starts to pull.

A few months ago, I had some work done as a pipe had cracked and the turbo wasn't getting air or something and the car was belching black smoke. Into the garage and it was an easy fix for the mechanic. It seems the turbo hasn't worked properly since i bought it, I normally ride bikes and assumed it was sluggish because it is a car :)

Since then I've noticed the problem and worry the clutch is on its way out. Economy improved after the turbo was fixed and is still good. There is no smell or other syptom.

Is this normal or is the cluch knackered?

Thanks in advance....