I remember seeing much debate for the longest time about which BOV you can use on the CSC. I know that some people have had trouble with making the HKS SSQ valve work because it stays shut with vacuum.

Here's a pull-type BOV I've been working on that actuates really fast, which would be perfect for centrifugal blowers. And you can keep it open with vacuum. You guys tell me if this would work for the CSC/VSC kits.

New BOV design