You have to disconnect the pipe from the black box from the manifold!!! The PCV valve is like a check valve only it lifts a ball bearing up under manifold vacuum to let the black box breathe. so therefore if you give the manifold boost the ball bearing PCV valve wont work so your crankcase has nowhere to vent! The crankcase breathing system is setup because of the small amount of gases that do get past the rings, since youve now boosted it the pressure on your rings will be really high ...dangerous at the mo!!!
I hope you look at this quick before you blow your rings!
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