Inconsistent Fuel Pressure with Aeromotive Regulator
#1
Inconsistent Fuel Pressure with Aeromotive Regulator
With my Aeromotive regulator, it is not able to consistently maintain fuel pressure. I have it set for a base pressure of 48psi, which makes it idle at about 44psi and it will go down to 39psi on decel.
But the regulator can't seen to be able to maintain this. This morning for example, the fuel pressure was 39-40psi the entire time. Its only a few PSI difference but that makes a big difference if running open loop or in boost.
The nut on the adjusting screw is plenty tight. The regulator is plumbed into the return line.
Anyone else had a similar issue? I may try upping the base pressure back to 58psi. I went with 48psi since my injectors are overly large and appear to have an issue pumping in too much fuel on decel.
But the regulator can't seen to be able to maintain this. This morning for example, the fuel pressure was 39-40psi the entire time. Its only a few PSI difference but that makes a big difference if running open loop or in boost.
The nut on the adjusting screw is plenty tight. The regulator is plumbed into the return line.
Anyone else had a similar issue? I may try upping the base pressure back to 58psi. I went with 48psi since my injectors are overly large and appear to have an issue pumping in too much fuel on decel.
#5
Looked through some of my logs today and noticed that the fuel pressure is not increasing with boost in a 1:1 ratio as they claim. With base pressure set to 58psi the fuel pressure only got up to about 60psi at 10psi of boost. It modulates pressure just fine in vacuum though.
Any thoughts on this one? I may give Aeromotive a call tomorrow.
Even the stock regulator would raise the fuel pressure at almost 1:1 in boost, and did so with a 255 pump and stock wiring. I have a Walbro 400 pump and hot wiring now so I don't think it's a pump issue.
Any thoughts on this one? I may give Aeromotive a call tomorrow.
Even the stock regulator would raise the fuel pressure at almost 1:1 in boost, and did so with a 255 pump and stock wiring. I have a Walbro 400 pump and hot wiring now so I don't think it's a pump issue.
#7
I have two gauges; a mechanical gauge from Turbosmart, and an Autometer electric sending unit that I wired into the EGR signal so I can log fuel pressure through the PCM. Both are located at the same spot on the rail and both read within a couple psi of eachother. I'm only reading the data from the electric sender to see what the fuel pressure is in boost since the mechanical gauge is on the rail itself.