#1080, "RE: Sorry: Megasquirt Basics?" In response to In response to 5
The MS doesn't care what the fuel pressure is, it's not the MS's job. The MS sort of expects the differential fuel pressure (pressure in fuel rail - pressure in manifold) to always be the same, most people set it to 43.5 PSI because that's what most fuel injectors are raited at. Otherwise your VE table would look pretty weird. With a 1:1 you KNOW you will get X amount of fuel flow at Y duty cycle regardless of manifold conditions assuming the regulator is doing it's job by keeping the fuel pressure on target.
