Installed the Holley afpr the other day and finally got everything back together and noticed with the reg adjusted as far as it goes clockwise the most I can get for pressure with regulator vacuum disconnected is about 48psi? Ironically that’s about what I was aiming for but I thought it could go well over 50 if so desired. With the factory fuel pressure regulator I had between 43-44psi which I did for a baseline with vacuum disconnected. The car runs good but I’m just wondering if my pump is on it’s way out with it only pushing 48psi? I also noticed when you hit the throttle with the gauge hooked up the tester doesn’t seem to move? Was wondering if the tester just might be junk, it’s a BE Tool brand and seemed like a decent unit.

 

Looks like the test gauge had a messed up attachment which I removed and now it works again, properly adjusted pressure to 47 psi.