Originally Posted by
dave cos4x4
a mate had a similar problem and it was the exhaust housing, it was cracked everywhere,may be worth checking, only when all the other easier things have been elimminated first.

cheers dave, will have a look when i get 5 mins, would the turbo not struggle to hold boost though if it was cracked?
because when it does dome on boost its hold psi right up to the limiter?
cheers jay