My cousins R does the same thing mate, what turbo have you got on the car?
My cousins R doesn't seem to be down on power (as in feel) however we will be checking all of this on the Rolling Road day setup for the NW lot at Prosport in Stockport.
Id check all your main vacuum hoses and as steve has suggested check that the clips on those hoses havn't pinched a hole in the hose.
Also check for rubbing on the pipes i.e. as the pipe bends through the body of the car and past the bumper and other potential rubbing areas (dependant upon FMIC setup).
Good luck.
Ant.[/QUO
Il chech all of them things listed tonight, the turbo is standard,,
Thanks for you comments,
Cheers