Wargasm

I am upgrading my fuel system and I can't seem to get enough fuel
pressure. I don't know what I was getting before I ripped my car apart
because I never measured it.

My mods:

"RX-7 Store" upgraded fuel pump. I think this is the Nippon Denso one
for Cosmo/Supra(??)
Mallory 4309 Adjustable 1:1 FPR (3-65 PSI Base)
1600 cc/min secondaries + k2rd rail (no stock FPR)
TWO different fuel pressure gauges for a sanity check while installing

Anyhow, even with the Mallory cranked all the way to max, the best I can
do with the car OFF is around 35 PSI.

When I crimp off the return line to test FULL pressure, it goes up to
maybe 40-45 PSI.

I hooked up a heavy duty battery charger (on engine start mode) to give
the pump more juice and this helped a little. My numbers with the
return line blocked went up to about 60 PSI or so. This is still
pathetic.

The ONLY thing I can think of that is broken is when I put in the new
pump, the little plastic O ring thing that snaps on to the top of the
fuel pump broke. I just put it back in with a crack in it. Could this
be bleeding off pressure?

Is that fuel pump just a POS? How can I test my fuel pump wiring for
proper amperage delivery?

If the fuel pump is a piece of junk, where can I get the Bosch one?

Thanks,
Brian