By the factory dash gauge, less than 5. More around the 2.5 - 3 psi range.... just tickling the turbo. I tried pushing the throttle for more boost and fuel pressure would not rise accordingly and was accompanied by more lurching.

A feller on the Turbo Dodge board gave me a bit of a formula for figuring out what pressure I need for boost over static pressure.

I need at least:
60 psi for 5psi Boost (which I'm barely getting)
66 psi for 10psi boost
71 psi for 15psi boost

He also said when I pinch off the return line I should also instantly see between 80 to 100 psi which I'm also not getting.