That is now done, but my issue now is that the van seems sluggish and I can't hear the turbo kick in at all

Mechanic did say that there was a small hole in the turbo to manifold pipe and to replace it, but would that make a huge amount of difference?
Having never owned a 1.6TD van before I have no idea how quickly it is meant to pick up speed and whether I SHOULD be able to hear the turbo kick in.
Anyone offer advice, or at least put my mind at rest as I am meant to be going to a festival in Devon in it on Thursday so running out of time if anything else needs to be done.
Thanks in advance
Chris