Yes, should be ~48-55 psi at WOT... At the risk of stating the obvious this assumes the fuel filter is good.
With the car cold, hook up a pressure gauge then simply turn on the ignition, don’t start the car. You should see 48-55 psi that way too. Another good way to test is to check the amp draw of the pumps. Good pumps draw 4-5 amps each, 8-10 amps when both pumps run. Less and your pumps are going bad. It’s nicely written up by Paul here...at post #7.
http://www.zr1.net/forum/showthread.php?p=136108
H
