hmmmmmmm, im stuck on this one. my s2 (running 208bhp), has an annoying problem that i havent seen before. When you go for a play in it and really boot it, i get this particularly strange fast clicking noise coming from somewhere behind the clocks (or so it seems). It doesnt happen when driven lightly, only under lots of boost.

Now i ignored it because i thought the clocks were fucking around. so when the clicking noise happened again, i didnt back off and just carried on driving it hard through the gears. but then it sounded like a boost hose had split (air leak noise) and was losing pressure. i pulled up to a roundabout, dipped the clutch and it stalled (like a boost hose was off and i had no pressure at all). eventually the car started again and drives fine again, but only under light load.

under heavy load, the clicking is still there, if you back off when you hear it, the car is fine and has no other problems!!!!

I have checked all boost hoses and everything! Part of me thinks the dump valve is fucking up and cant cope under high psi.

I NEED HELP!?!?!?!?!?!?!?!