When I go from a standing still and try to take of fast and as soon as I let the clutch fully out it near enough dies then it picks up again and I'm going.
Is this normal for a standard setup + slip on can

Pete

Does it just do it when hot, or all the time? Could be your releasing the clutch too early, mines similar have to slowly release the clutch to get the best out of it or the revs drop right down.

Symptoms like this can be caused by the pilot screws incorrectly adjusted.