I have been testing my fuel pressure gauge sending units. The gauge always reads higher than the fuel press reg setting. Awhile back I had bought a second sender but it turned out that the fuel pump was actually bad. Replaced the pump from Cindy. The reading I am getting is 60 psi (actually 55) but when I rev the car the pressure drops back 3 or 4 lbs. the car is running no differently and as boost builds I get an increase in pressure that probably reflects my boost (12 psi). Has anyone noticed this in their electric fuel gauges. The gauges act exactly the same in reading, so the sending units are good.