how much fuel will codlstart valve make up for?

Ive got mine all wired up but have yet to use it as i only run 14psi at mo was thinking of having it kicking in at 14 to fuel up to 17psi reckon it give 3 psi,s worth of fuel on boost?

Once i get a working amal valve i can 2 stage boost and hopefully 5th injector aswell.