good list of things to try. All I was saying is that one inch of vacuum does not equal one pound of boost. On my stock Vette the fuel pressure was 50 psi or so with the vacuum reference disconnected and 43 psi with it connected. That car had 19-20" of vacuum yet the fuel pressure only changed 7 psi or so, and that is normal.
On boost reference you are correct, one psi of boost should give one psi of additional fuel pressure, but vacuum doesn't work the same way. I don't think his fuel pressure appears an issue, at least with the info he gave. He needs to start looking at the other things mentioned.
Jody
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