I recently had a vaccum leak on my JoeZ intake pipe and since i fixed it with a clamp the car is ok for a while and then as it warms up it tends to become a bit sluggish during pickup. From standstill I could usually accelerate quickly and move off quickly but now when the car is warm it needs to think before and then all of a sudden it decides to pickup quickly, like there is a delay.

Any ideas what this can be?