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I installed a second fuel pressure gauge right off the pump, watching that and the one that is right before the FPR. As stated in some of my other posts, the fuel pressure is fine for the first ten minutes or so and once the car gets good and warm the pressure starts dropping gradually until it's around 25 psi. I was getting a solid 38 psi at the pump gauge and still the fuel pressure dropped at the engine bay. The voltage to the pump is dead steady when it's idling in that warm up period and all the way through the drop it stays level even as the pressure falls up front. The only thing I can think of is a jacked fuel hose some where between the pump and the front gauge. If memory serves there are only two of them though, one just off the pump to the hard line and a short one from that hard line to the. I don't think the problem was a leak because a leak of that size would have flooded the area with gas fumes and I don't smell anything. I get the appropriate 1 second pump when the ignition is switched and that used to get me up to 43 psi but now it gives me around 10. And I do get that 1 second bump when I switch the car off, not that it keeps pressure up. All this leads me to believe that the problem isn't on the electrical side since everything electric I've checked out so far has been fine and I've checked just about everything. The only I have left electrically speaking is the wiring harness between the ECU and the FPC, though if I'm getting proper voltage and pressure at the pump all that would seem to doing it's job.
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