I have a DHP Powertuner here to use.

This is the part if the instructions that I was reading about venting the bypass valve. I think it's required because I'm planning to use the GT's PCM.

"" Go ahead and attach the Boost Bypass Valve to the supercharger. It's held on with a bracket and two bolts. Run a vac line from the tree on the supercharger to the top nipple on the BBV. The bottom one needs to see ATMOSPHERE, because our L36 PCM's cannot control the BBV."

-Rob