So I have a 99 Eclipse GS with a HRC Stage II, HRC fmic, 2.5" dp, 2.5 high flow cat, 3" catback, Greddy type s bov, 8.8:1 JE pistons, Crower billet rods, missing link, greddy profec B....I want to go to a Stage IV....so I am going to get the Accel DFI and accel/hrc 625cc injectors. What Fuel presure regulator should I use and what else do I need?

I've heard good things about the Aeromotive fpr. It's a 1:1 riser, which is what the DFI should need. Summit sells them for $130.
http://store.summitracing.com/partdetail.asp?d=18&s=111&p=3814&part=24991&v=AEI


95 Eclipse RS : 5 speed
Jeep TB writeup - http://www.dimensia.com:81/jimbo/JeepTBfor2gnt.html

Thats what I use with the 8 injector setup as well. I love it. Pressures are perfect every time.

W/ the DFI you don't need to worry about adjusting the FP, so an adjustable fpr isn't truly "needed". The Bosch 1:1 works real well, it holds very strong and very accurate and isn’t as expensive.

You adjust the pulse width instead of the FP.

Where did you get the bosch 1:1?

HRC sells them. Just an FYI, it is a non adjustable regulator. Holds idle at 39-40psi solid.