setting FPSS to 25-30 psi?

[the98stang]

Hey guys I'm confused about how to set my FPSS to 25-30psi. I turned the FPSS nut 2 complete rotatations counter-clockwise. But how do i know when it's set to 25-30 psi? The fuel pressure guage will just read the fuel pressure for the car, not the switch??

 

[Red2000GT]

This for your 2000? The fuel pressure is controlled by the fuel pump,not an external regulator. BUT I'm not sure what an FPSS is,is it something new?

 

[the98stang]

This for your 2000? The fuel pressure is controlled by the fuel pump,not an external regulator. BUT I'm not sure what an FPSS is,is it something new?

FPSS= fuel pressure safety switch. They're used for nitrous setups. They are set at (X) psi and if the fuel pressure drops below that amount while spraying the FPSS shuts down the system. And I was just wondering how to set the switch to 25-30 psi. Some one told me to turn it 2 full rotations so that's what I have it set on right now....

 

[Dope 97GT]

If you dont have a gauge i wouldnt mess with it messed mine all up you can get one that goes where the schrader valve is for like 30 bucks then 10 for the extension. I have an electrical one but that cost like 200.