Fuel cutoff?

[OMAR]

After swapping heads, cam, intake, injs.,MAM, etc., my car ran really rough so I thought: maybe too rich. Now, the needle on my FP guage somehow broke off right at the base so I'm not sure what the pressure is, but it was at 38-40psi before it broke. Turned the pressure down and it got worse so I turned it back up. Turned the pressure up a lil higher and it got better. I figured try a lil more and see what happens. The car shut off so I backed it down a tad, and it still won't start. I removed the gauge from the rail and there is no pressure with the key on. Could I have exceeded the allowable static pressure and broke the diaphram or burned out a relay or something? It sounds crazy but I can't figure it out! I checked the button in the hatch and it's still down, I can hear my T-rex prime when I turn the key, so could it be the 190 lph in-tank blew out or something?