I can tell you this much, the injectors in my Mazda don't atomize most of the fuel into a fine mist, not even after much cleaning. I've learned that large droplets means dirty, everything else is normal. Also, with fuel vaporizers and/or hydrogen generators hooked up the engine noticably runs smoother, I can run the engine leaner, and mpg goes up. Not a lot, but the $3 or so I save per fillup adds up.
Kevin