Stock - No sound at all. You will always get gearbox noise from the backlash of the Vortech gearset, but just at idle.
My setup, does have a nice sound. No BOV "swoosh" mind you. It is more of the high RPM whine coming from the compressor spooling up. Again, not like a turbo spooling. I have the TurboXS BPV and a custom short-ram intake. If I bring 1st and 2nd gear RPMs up slowly to 5-6K, you can hear the compressor spooling up, the intake sucking hard, then the BPV opening. At that point, it sounds similar to a small turbo w/o a loud BOV. Some people ask if that is a turbo when they hear it and others when they see it.
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