But of an update, fault code has yet to show its head again, happened 3 times since owning her so far, have done the Mr muscle fix and not really noticed that much different, I suppose it doesn't do the 'blow off' noise any more and the surge has changed.
There didn't seem to be any tightness in the vane control before and there wasn't much difference after.
I'm thinking the step in acceleration is down to something other than the turbo. It is always at exactly the same point with a small amount of throttle, if I floor it, it doesn't happen.
I'm wondering whether it is when the swirls open and effectively the change from 12v to 16v and maybe there is some build up in the manifold restricting flow.
When I get chance am going to trend the swirl flap actuator with the boost pressure.