I seem to remember a device I saw on the local news about two years ago, that uses hydrogen to increase FE. The news channel, ran some independent tests of their own, as part a consumer report they do regularly, and they did see improved FE on some vehicles.
(they have a video from the news cast I watched on their website)
After searching long and hard I finally found the device and wanted to strike up a conversion about it.
http://hydranox5000.com/
Doesn't seem really popular.
What do you all think?
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