Sorry, forgot to put the fault code description, thanks for the reply.
It's strange how the fault code took such a while to generate, which made me think if we had a vacuum pipe off could the swirl flaps have moved and generated the fault code?
Has anyone had swirl flaps causing a simalar problem and the fault is a coincidence? Or should I go back and triple check the timing, take the chain off and redo it again?
Would the new water pump/super charger clutch need programming?
There is a boost gauge and that seems quite erratic but power on the road doesn't seem too bad? It's very strange.

John