Its a pretty known issue that these sending units were off from the factory. If your gauge is closer to F, you should brag about it at car shows
Ask them to show you in the service manual where it specifies the pressure they told you?
Quote:
FUEL SYSTEM PRESSURE
Ignition ON Engine OFF 284-325 kPa (41-47 psi)
With Regulator Vacuum Applied [1] 3.0 - 10.0 psi less than Ignition ON Engine OFF
REMARKS:
[1] May be checked with either of the following methods.
With Pressure Regulator Vacuum Line Attached at normal idle speed.
Ignition ON Engine OFF with 10 Inches Of Vacuum Applied To The Pressure Regulator.
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This is how AllData lists a 95's fuel pressure. They Only listed Key On pressure for 97.
There's a chance that cleaning the injectors helped the car out. If the extra fuel pressure is band aiding a problem, well you have to figure out what it is. The SES light will trigger for lean too only if the computer can no longer compensate for it. There is a chance that your Fuel Pressure Regulator is bad causing your higher pressure.