[FPR] err yeah, another question..

[Kreator]

Ok, so i hooked up 2 fprs in a row (don't ask why, i'll explain later) one set at 20psi (my messed up afpr) and the other one bone stock set at 43.5psi. Now when i turn the car to on position, the needle on the fuel gauge jumps up to about 48psi. So my question is, is there some messup in the system (like pressure addup, alhtough i can't see why would they) or can i blame it on the crappiness of my gauge (summit gauge for $19.99) Thanx