Fuel help you guys

[91GTturbo]

Originally posted by USMC302
please excuse my ignorance in this for I am new to the supercharged world. We have a 95 that has the vortech supercharger, with the trex 190lph inline fuel pump, the stock vortech FMU, and the ignition that was installed a year ago doesn't work but anyway, we are running the stock 19lb injectors, when we go up to 24lbs squirters should we go bigger and drop the fmu? What does that do for you, I though the FMU was needed for the fuel to keep up?! It is only 5lbs of boost for now. Everything else is in the sig. thanks guys

The fmu spikes your fuel pressure, which essentially makes a smaller flowing injector seem like a larger flowing injector. I would go with 30's as the minimum, plus their the same price as 24's anyway. With only 5 lbs of boost and your current setup, the 30's alone will be enough. Does your fuel regulator increase fuel pressure with boost? The reason I ask is because your fmu is doing it for you now, if you bypass it and don't have a regulator that increases fuel pressure for you, your going to have to get one.