ok so this ? probley has been asked before, But how do you decide what injector size u would need. I planing a 331, with trickflow heads. I don't know the what intake I'm going to us yet. But going to have 8.1 or 8.5 c/r with running atleast 15psi all the time from a HP turbo kit. is there some formula to figuring it out?

peace