So does anybody know what are Fuel Pressure is at idle and fuel throttle?What should it never go under?

I want a fuel pressure guage and to get a warning light to go on if it gets to low. I'm going to be running nitrous soon too.

Others may say different, but...

I get ~50psi at idle. ~55psi in vaccuum under partial throttle load.. but of course, i'm heavily modified.

I'm guessing from your name that you have a '95? 1995 cars are different from the other years. '95s have a vacuum referenced fuel pressure regulator and the other years have a fixed fuel pressure. A '95 can expect 38 psi at idle vacuum and 47-50 at full atomosperic pressure (vac hose disconnected).


Corbin

'95 ESI-T
HRC+FMIC+ETC...

So should it NEVER go under 30 psi??

If you are driving hard and then completely let off the gas, you can get some more vacuum...that would make it dip below 38 psi. But below 30? It would take alot of vacuum to do that. The fuel pressure at atmostpheric pressure is most important. When you go WOT, you are essentially at atmospheric pressure. Thats when you really need the right amount of fuel.


Corbin

'95 ESI-T
HRC+FMIC+ETC...