Current videos seem to suggest that the intake vacuum does contribute to producing more HHO. Unfortunately, the intake vacuum increases and decreases opposite of demand. The vacuum is reduced when we need more. More troublesome, the vacuum is increased at idle, when we least want it. Most computer problems occur at idle.

The currently best accepted solutions for this is a pwm or altering the computer, which is a pain. Maybe the best way is to simply figure out a way to reverse the vacuum, or make the HHO flow opposite the vacuum.

A simple vacuum control switch could solve alot of problems. The vacuum can be used to open or close a valve. Better yet, it could also be used to control the current flow to a pwm. Does anybody have any experiments or thoughts on this?