has been debated for a long time, and there is probably no definite
answer. I say that because there is no precise way to measure the HHO
realistically. There are just too many types of measuring devices being
used, and each one of them provides different measurements. People are
oxygen meters, hydrogen meters, air meters, natural gas meters, welding
gas meters, and even some hydroxy meters which are manufactured by
If you are using an Air meter to measure the HHO, then the amount of
gas you are measuring is way more than what is actually being produced.
So 1/2 LPM per Liter of engine displacement may be a good rule of thumb
for you to use to.
If you are using an Oxygen meter to measure HHO, then the amount of
gas you are measuring is still more than what is actually being
produced. So 1/4 LPM per Liter of engine displacement may be a good rule
If you are using my Cell Configurator to determine what Faraday says
is capable of being produced, then 1/8 LPM is probably about as close to
being correct as we can guess. I have witnessed 300 to 600 ML PM
increase fuel efficiency on big V8 engines; without causing unwanted
computer codes. This is not to say that 1/8 LPM is maximum efficiency;
it is just a good starting point.
Is more better?
Well, it could be, but it comes at a cost. The harder the engine
works, the less efficient it becomes. The hydrogen generator puts a load
on the alternator, which in turn puts a load on the engine. The more HHO
the engine gets, the less fuel it needs; assuming the emissions computer
is accepting and allowing the HHO to do its thing. Engine Timing may
need to be adjusted, but that is a given.