(on his holiday! how's that for customer service!), did all the usual stuff as well as fixing my broken speedo which now works perfectly, diagnosing a few problems and giving excellent advice on the way, all at a great price and a top guy to boot! 
Car is now much improved under boost and generally feels a lot smoother.
Highly recommend these guys to everyone, first class stuff.Cheers again James, see you in a few weeks for the death of the cat!
