Thread: AEM FRP won't adjust below 90psi

I installed the FPR at least a month ago, and the pressure was fine. Today I installed some ve 333cc injectors along with the proper fuel line fittings from AEM for the regulator. I've checked my lines, and they are hooked up correctly. I checked my fuel pressure this morning before I started this project, now it won't go below 90 psi. The fuel pump I've been running is a Walbro 255HP. Any ideas? This is driving me nuts, and I need my car for work in the morning.

Thanks for all of the replies guys. After even more headaches I figured this out on my own.
The 90-100psi that I'd been seeing caused my really old second hand walbro to shit on me. So, I ordered a new one and just finished installing it this morning. Now my pressure is spot on, but it wasn't just the fuel pump.
When I installed my AEM AFPR a while back I left my fuel rail untouched except for a modified OEM FPR. I carefully cut off the top part of my OEM FPR to remove the spring. Doing that allowed almost unrestricted fuel to flow to my adjustable regulator.
Well, I finally decided to install my VE 333 injectors this past Sunday. A while back I'd made my mind up on modifying my fuel rail when I got ready to swap injectors. Since the price for a fuel rail adapter that goes to a straight 5/16" nipple is ridiculous, like this one Price: $67.50 shipped, I did this instead with a band saw, Price: FREE. I cut the flange off of the end of the fuel rail where the FRP attaches to gain access to the hard line that's pressed into it.
After I put it all back together is when I got the over pressure issue. So, I checked my lines, rail, regulator and pump (until it died LOL). While in the tank checking on the pump I noticed that the metal return tube, that attaches to the fuel sender via a short rubber hose, had a tiny reducer pressed in from the factory. The reducer looked to be just under 1/8", and I thought that had to be the origin of my problem. It was severely restricting fuel from returning to the tank.
I sawed that reducer off of the return tube, and all is well now. I still have to change my TP to compensate for the different injectors, but the problem is solved. Hopefully if anyone else has this problem in the future this thread will help them.