hi all ,
i am new to the forum , hope you can help ,first of all my wifes st has a vibration under power , it is there most of the time but the moment you lift off the pedal it stops , it doesn't feel like a miss fire its more like the engine is bolted straight to the chassis and it the engine vibration that you feel?
second this has just started , the car seems to lose boost for a second as you nail the pedal but then comes back, the boost gauge looks like it dips slightly but then comes back in , the needle just gets to half way
any help would be great