sigh... THE BLUE BOV from mopar, still makes the sound because "SOME AMOUNT OF AIR" is going through it, out of it, whatever. So obviously, it works to some degree. However, I must admit, that yes, if you run high boost, you probably want a better quality "REAL" bov, which can vent a higher amount of air, thus relieving the pressure sooner, thus letting the turbo spool up faster... So high boost, ya, get a real one.
In my case, on the NSRT4, i had constant f*kin leaks on the mopar valve, and it just never went away. The screws became loose, the sealant melted out over time, and basically, i never had a constant boost pressure, and kept going back to the dealer to have it fixed, arguing that I bought it with the car from day one, so yes it's covered under warranty. Maybe it was just a fluke, but I gotta say, otherwise, i loved the sound it made, and had an amazing time with it. I honestly can say that I'm glad I had it in the car, and it made tons of people talk, but mostly, i loved hearing that thing! If only it didn't give me any headaches with leaks...
Good luck all, and hopefully the csrt4 won't cause as many headaches...
Any word on who makes the kit for the csrt4 for the up pipe to mount a bov?