If i drive the car off boost, its fine, as soon as it starts to boost, the clutch pedal becomes possessed, it shakes like a mo fo, making the stalks, brake pedal & pretty much everything else vibrate.

If i put my foot down on the clutch, even a little, it will stop, but release it & off it goes again.

The pedal has been "rebushed" by prev owner, and there is a uprated clutch in there.

Hope someone can give me some ideas, as it really getting on my tits now

many thanks in advance.

Mark.