AA charger Problems!!

[Low_bm]

hi i recently purchased an AA supecharger kit for a 325ci steptronic. after fitting it the car is running sweet, apart from one problem. it seems minor but could turn out to be major.

The exhaust gives out blue smoke say when i go in hard boost, idealy 4k-5k rpm, but when im crusing at that engine speed on the highway 80-100mph then it wont smoke. its driving me crazy, its not the piston rings or valve seals, because it would do it constantly or when i accelerate a little. it only does it when i boot it..:hmm:

[travisbickle]

I'm gonna shoot from the hip and say it's the PCV check valve. The stock PCV system doesn't normally see boost so AA supplies a check valve that prevents boost from blowing back into the cylinder head and down into the crankcase. The crankcase is normally under vacuum or near atmosphere pressure. If you don't have the check valve in place there's a very good chance that oil IS blowing by the valve stems.