Apexi bov. Getting the flutter sound no matter how far the nut is backed off. It Was sharing a vacuum line with the map sensor but it now has it's own line and still does it. I recall the apexi bov being bad about this. I even took it apart and re greased everything. Any other fixes you guys can think of?

 

Where is the vac line to the BOV running from? There's an ideal spot right off of the manifold, if it runs off of the throttle body, some of those lines don't receive vacuum all of the time...

 

Running off the back of the im. The ports back there. It was running off the pressure sensor output.