Anybody ever tried this little gizmo?

Hysteric said

Vacuum aids vaporization so if you have lots of it in a restricted engine then yes it may not need more.

If the theoretical ideal AFR is 12.7 to 1 for max power then a 12th of the ingested charge is fuel. How much of that small amount can expand to crowd out the air as a percentage?

Click to expand...

Water expansion volume, liquid to steam-gas, is 1,700×. The race fuel NAPCAR is using is something I don't have enough info on to guess, I suppose I could look up a generic pump gasoline figure out of a book, but it would be an inaccurate stab at best.
Suffice to say, the more liquid fuel that turns to vapor that turns to gas in the intake, the more air that is displaced...which is already exceedingly rare in this instance..