I guess I can use the word "crap**" as being nonfoul...After all, you did it.
Popular Mechanics ran a series of tests on so-called miracle fuel savers a few years ago. None of them worked -at all.
Included was a hydrogen / water injector. Lost about 20% of the fuel economy, IIRC.
This is not Ebay. These forums are not intended for spammers and scammers, like yourself, to use to sell your magical products.
If you look at the electrochemistry of hydrogen production from water, you will see that the 5 ampere current will produce a certain molar equivalence of hydrogen gas. The energy required to do this DOES reduce your gasoline mileage slightly.
When you burn the hydrogen to recover your electrochemical investment, you get the same amount of energy back (with expected losses). Hmmmmm...Perpetual motion seems to still be out of vogue. You are just juggling energy back and forth, and the sum total is (yep, you guessed it) zero.
Dont you really think that if this were proven technology ALL of us would get a Mason jar and cobble up one of these simple cells? Dont you think it would have made headline news?
Testimonials mean nothing. ("I did not have sex with that woman -Ms Lewinsky", and others)
Get Popular Mechanics to test your device, and if they find it really does increase mileage and or power significantly, I will publicly apologize to you on this group.
If not, get outta Dodge.