BOV
you don't have to have one, but it's a lot better for the life of the turbo and the spool time. you can find so many cheap ones these days, you would be kind of dumb not to run one when you could find one for 10 bucks.
most bov's if you vent them directly to the air are going to make a little sound, there are some quiet ones out there though. You can reroute the air from the bov back into the intake and that should quiet it down a bit.


