recently ive noticed my car doesnt seem to be pulling like it used to ive heard the dv can cause this problem but i also heard that there would be a hissing on acceleration if the dv was gone i dont get this noise the only other things i notice is the car is due a service in 400 miles according to the trip computer and under the bonnet the part of the air intake that connects from the engine cover to the wee box at the front keeps coming loose so might be drawing in hot air from the engine compartment. i think this problem must have been who ever serviced it last becasue i noticed one of the engine cover mounts is broken and the intake part looks like it was just ripped off and not unscrewed so now the screws dont hold it in place would this cause the problem im having or is it likely something more serious like a boost leak. The car is on 74k miles, is an 05 plate, it has bluefin stage 1 map on and the last service was done at an audi specialist where i bought the car, but i have my doubts about them bein specialists at all lol. I think the car is gettin out of the warranty they gave me and i reckon if i went back and said they broke the engine cover and air intake they would just deny it.