Well, I replaced all my vacuum lines and installed a vacuum distribution block on the inner fender. Now I have a 3/8" vacuum line running from the intake to the block, and then just short 5/16" lines to the necessary solenoids.

The upside is the car idles infinitely better. However the problem under boost still persists.

I've got a week off starting Tuesday. Going to set up my A/F meter and fuel pressure gauge so I can monitor things while I'm driving. I'm starting to think I popped an intake gasket. I swear I can hear a whistling noise coming from the intake.