Hello!
I just recently learned of HHO, and have been investigating it for a short while. I found this forum via a web search, and have really appreciated all the information I've found.
My first, and only experiment has been with the Water4Gas design, and I have it hooked up to my 87 Toyota pickup right now, attached to a vacuum port on the intake manifold). This truck has no computer, and a weber carb. So far it has done everything that was claimed (not sure on the mileage yet, still too new). The engine began to run much smoother after about 1 minute, and the acceleration curve has picked up noticeably. After reading this forum, and experiencing the overheating issues with baking soda, I'm looking for something better.
Today I learned of the Smack's Booster, and have been investigating it. I intend to build one, but there's still a lot about it I do not understand. For example..... The Water4Gas design incorporates a valve that allows outside air to be "sucked" in a "bubbler tube", where as the Smack unit seems to be completely sealed. This is where I'm not getting it. On the unit I currently have installed, the engine vac pulls the HHO out of the unit and into the intake manifold, but the Smack design doesn't seem to do that....I'm not sure.....does the HHO generation create positive pressure inside the Smack unit? Or has something been left out of the plans?
Input from anyone with experience on the Smack unit is appreciated!