seems to be going through a rough patch at the mo. im dropping the engine out in a week or so to swap the box over but the last few days ive noticed it idling high and rich and it puffs a cloud of grey smoke out, but only off boost, and only when its warmed up. mainly as you come to a stop at a junction and not when youve been boosting beforehand either. on boost it pulls fine at 1.2 bar. pcv is working fine. im thinknig afm or maybe coolant temp sensor.
im hoping its not too expensive, anyone got any ideas?

ahh yeah, thats a good shout, sadly i had a mate follow me tonight and when its warmed up the smoke is more bluey and smells oily. shit!!! still holds steady boost though. worn valve seals perhaps?

me too. i have a roller bearing turbo so i can do without having to replace that. ill have a good look this weekend and see if i can gather any clues. its looking like maybe worn exhaust valve seals?? the fact it does it after youve slowed right down kinda points to this i think.my heads been a bit shimmy sounding for a while so if it is that i might just get another one and chuck it on. i really hope its not rings

with the turbo im looking for oil in the pipe yes? and whats the compression meant to be? just so i can plan my heart attack and wallet raping session.

cheers chap. ill look at that this weekend. 

too much play in the turbo fella

Ooooh so it ran unlimited boost for a while then let go?

Probley either the piston ringland's or turbo bearings/seals gone, comp test may not identify the ringlands tho. So you need to have a leak down test done. what do the spark plugs look like? as they will tell you a great deal about the engine condition, usually oil burn's with a blue smoke btw, are you sure it's grey as that can be overfueling which could be something else, post up some good picture's of the spark plug's please