yea i have a jegs liquid filled guage. the fule pressure guage is mounted on the dual feed line it sits flat ( you look straight down at it) the regulator is mounted right at the dual feed line and then the ruber line goes down to the pump. pump rated at 5.7-8psi 80gph. all fule line is 3/8. This problem happens at idel it does not matter if i rev the engine the pressure does not rise more than 1/2 pound acording to the guage.