So I installed a Holley adjustable fuel pressure regulator on my 90 efi 460. From the articles I have read, everyone says to set it at 41 psi. Does this mean 41 psi at an idle with vacuum line connected? Or disconnected? Or 41 psi at wot with vacuum line connected? I can't seem to find any info on it. I am currently running it at 41 psi at idle with the vacuum line connected, and it runs good with better power, but I don't want to screw it up.