I am looking at getting an Aeromotive Fuel Pressure Regulator, just wanted to know what gains I will see. Will my car run better. Let me know anything you can about install difficulites, how to change the pressure, how to monitor the pressure. Thanx for any helpful info!!!!!

 

Unless yours is bad and giving you bad pressures. Or you have a 1993 LT1 and get a adjusatable one ( which I see in your sig that you don't). You won't see any gains.

 

I assume that you mean an ADJUSTABLE regulator since you mention changing the pressure.

Stock pressure with NA engine should read around 43-47 with the vac hose off regulator and about 8 less with it attached. Hose off represents WOT reading.

Unless your stock regulator is boogered, an Adjustable one will not do you much good if you have an OB11, since the PCM manages to adjust the injectors to compensate for any leaning out of the FP.

A/F is adjusted with programming and I believe most programmers will recommend that you leave the stock pressures.

In sum: don't bother with an AFPR unless you just want to fool around with it.
BTW, I gained around 17 RWHP on the dyno when I changed my FP from stock to around 38 at WOT: unfortunately because of my PCM the leaned out condition was compensated for and I soon lost that gain.

Got it back when PCMFORLESS adjusted my A/F. JMHO

 

I have an OBD1 and I herd that an adjustable fuel pressure regulator will help. I plan on trying it either way, it wont hurt right? Its not very expensive and the goal is 12.5 no cam, no heads, no headers, no N20. Any lilttle bit helps. Thanx for all the info so far!

 

Let's see you can halfassed get WOT fueling temporarily good till the pcm learns it out and spend over $100 to do it and need a bunch of trial and error or dyno time to find that power. Or you could spend less and get a tune which will dial in the fueling accross the board and keep it that way as well as adjust timing for more and permanent gains.
Those that suggest tuning with a regulator instead of pcm work should be ignored on matters of automotive perfomance. Adjustable regulators do have uses but your application is not one of them.

 

The 94 PCM's are different then the 93 LT1's and other older computer controlled cars. On those it's like tuning a carb, but the 94 and up computers are smarter. They will adjust fuel delivery to whatever fuel parameters that have been programmed in no matter how much pressure you have.

Jason