for a 1997 with the OBD-II system
the fuel pressure at the injector rail should be
38 to 48 psi
At full throttle and 5200 rpm.

Idle should be 43.5 psi or better

My memory is fuzzy but i think the FSM says
the pump volume test calls for
2 liters per minute output.

the 1992 fuel system had
an external regulator and a
second return line,
but its fuel pressure was factory set at
35 psi plus or minus 5