They are totally worthless, it takes more energy to make the HHO than is derived from the end product. Otherwise you would have invented perpetual motion and the world's energy needs would be solved!!! its a few people making money off of gullible folks that get suckered into all the marketing and disregard all the laws of Physics and common sense
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DJ Phoenix (my modded) Hi-1200/240Tow/75FS/80DD/100/140SS +Minotaur
ASE Master Auto Technician
2001 Ford Excursion 7.3 4x4
Projects. 1970's Hustler and Max II Amphibious ATV's