Well, I thought I was done asking questions on the work I was gonna do to the car, but I found one more. I went through about 20 pages through search and can't find the information I need... I'll be taking the fuel rail off and on the fuel rail is... the fuel pressure regulator. I've found the rebuild kits for it, but... The manuals I have say not to open it and replace it as a unit as its adjusted from the factory... This is for a 91 305 TPI setup.

My question is, if I open it up and put the new parts in, do I just close it back up or is there some sequence I need to go through to reset the correct pressure? I know I need a special bit. Kind of like the locking hex bit for my license plate cover, but that aside... I don't want to open this up and find I've screwed up the settings with no way to get em back to normal.

I'm attempting to clear up a problem with the car, so I have no problem doing a complete rebuild from the intake/valve covers up, so regardless of whether its still good or not currently, it's 14 years old and for the cheap price of the kit, if it's doable, there's no reason not to rebuild it, if for no other reason, to eliminate it as a cause of the problem.

Just buy Ajustable Fuel Pressure Regulator (AFPR) and save yourself the time and effort. They are not that expensive.

It's not the cost. It's the fact that nearly every post I've read has a differing opinion on not only which regulator to use, but how successful they were at installing it... Such as the following snippets from various posts.

Don't use holley, use holley, don't use accel, i use accel and its great. use bbk. use a locking screw. my screw was too long. i had to cut the screw. i had to buy a new screw at the store. the screw hits my intake. etc, etc, etc.

All I want to do is replace the innards of the stock regulator. No screws to bump into the intake, no screws to fall out or loosen. No problem with the fitting of the unit. I just need to know if I replace the innards, can I just close the unit up or do I need to adjust it somehow. and if so, how?

I'd love to just take a pot shot at using an adjustable one, but I don't have the time really to spend half the day or more fixing potential problems with the fit, screw, etc.

Your choice. Never had a problem with my AFPR & Gage.