yeh put the gasket back when i switched the BOV from recirculating to atmos.

Blocked up the recirculating hose, tightended the spring AND STILL getting the highest pitched whining noise with pretty much no boost when the car is trying to spool up. when car is in neutral and revved the BOV works fine.

Any chance that if i didnt block up the recirc hose properly that this coud be the issue? I used one of those hose clamps that you tighten with the screw in it, as the other clamp broke when i was taking it off.