I have a paxton 300+ fuel pump and while drivin down the road at normal speed it just drops to 3.5 psi and sounds funny, but give it a minute and back to normal:confused: 
is this on the stang? could the filter be gettin clogged?
Just stick the key in the ignition and go race Verbus
haha, and no the filter is clean as heck
It could be alot of things. The pump could be getting hot. The power supply to the pump may be inadequate. The pump may be mounted to far from the outlet. Fuel may have sloshed away from the outlet of the tank, and let some air get in the line.Timmy give me a call when you want to work on it I’ll help yah out.