[mheyman]

??? with a pressure gauge installed after your fuel pressure regulator ???

As Jason corrected - it's before the regulator, not after.

 

[mheyman]

Pretty sure my first reply properly answered your first question.
You recent post asks a new question, not so clearly, and not so nicely. My FU answer is:

in a FSM - of course


you are welcome!

 

[mheyman]

Yes of course - thank you for the correction Jason.

To the OP:

You asked a specific question but more important are symptoms.

FP in turbo subies is not constant and it is possible to have pressures issues under boost and not at idle. All the hoses, every one near the engine gets old and hard. I think there is just one to the regulator, and the regulator has a diaphragm that can age and leak.

I don't think that fuel pump problems are all that common in stock turbo subies. But, If you have a high milage car and replacing the fuel filter might be warranted anyway its not very difficult to replace the sock and filter.