it's prob being caused because your getting boost creep and creeping all the way up to fuel cut. it creeps slowly up eg. 7psi....8...9..10.11.12 CUT CUT CUT [Toby]theory is that the wastegate simply cant rid the boost (hole to small, flap buggered) therefore instead of controlling the boost and flowing it out the exhaust once the desired amount of boost has been found, some is left behind causing creep[/Toby] guy called Petbeemer on TGTT.com can mod your wastegate and manifold to stop the creep, think he charges about £30