On a positive note, he dropped the free energy claim...at least in that video. This kind of techno-evangelist hype is typical of the genre. Using glass canning jars instead of a purpose built shatter-resistant setup or a dry cell is also part of the appeal for that target market. Folks want to see bubbles.
In checking out some hho videos and sites, it was pointed out that with computer controlled engines, the benefits are short-term. Once the computer compensates for the imbalance, it negates the benefit. You have to have the computer tuned for the new mix. With the improved combustion, there is also a risk of overheating the engine before you get things tweaked. It is highly recommended that there be an exhaust manifold temp sensor installed.
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