[Ed Wright]

After dialing my air/fuel numbers back to the same, 60 psi & smaller injectors was a solid 5 hundredths quicker. The reason I was given by the most knowledgeable guy I have ever known, was it reduces misfires, and promotes more complete combustion. We never hear all the misfires taking place all the time.
Larger injectors require much shorter pulse widths, at idle, light loads, and decel. When you get much below one mili second pulse widths, it gets inconsistent. My knowledgeable friend works for GM, doing the original calibrations (“tunes”) on Corvettes. Absolutely knows more about this than anybody here.