Hi Jager,
I spent a lot of time experimenting and researching before I was able to put together something that actually gave me gains. I more or less copied a lot of the work that SmithJetta did, but I have an open-bath generator on my Grand Prix and I am getting a solid 20% increase on average. I have not mod'ed my exhaust system, computer system, or any other functionality with my engine. I merely piped the HHO gas into my air intake and saw solid gains. I've tested this over the course of almost a year to make sure it wasn't a fluke, or me subconsciously easing off the gas, hoping to see improvements. When I say I've seen a 20% solid increase, it's tried and true.
I really would like to go to a dry-cell design just because I've heard so many good things about them, but in the meantime this IS working. My cell is completely home-made and it cost me about just under $100 for ALL the parts and materials to have it running. It runs about 1.5 amps and I only ever have to add water every couple of months. I made an exact duplicate and tried to put it in my Jeep and it didn't do a thing.
Don't give up; I almost did several times right before I finally cracked it for my car and while I'm not getting free fuel by any means, getting a 20% increase on MPG was/is definitely satisfying.
My father made the exact same cells for his '94 Suburban and went from 13 MPG average to 18. He also put one in their huge motorhome and saw a solid 20% increase with that as well. The stuff works, it's just a matter of cracking the code for your vehicle. My Jeep is stubbornly refusing the stuff and I'm always thinking of what I can do to crack that. My father could never get their '98 Tahoe to take either.
Hang in there and good luck!
Give a man a match, and he’ll be warm for a minute, but set him on fire, and he’ll be warm for the rest of his life.
2000 Pontiac Grand Prix GTP 3.8L SII S/C'd
15%-20% MPG increase at 1.5 Amps
2000 Jeep Grand Cherokee Limited 4.7L V8
No gains.