Originally Posted by
RustyLugNut
The downstream O2 sensor does NOTHING to affect the engine operations.
Also, you and others, repeatedly quote how too much HHO throws off the upstream O2 exhaust mixture. Please, clarify your thinking for the reader. HHO is a stoichiometric (balanced) mixture of hydrogen and oxygen. When it burns, it does so to a complete burn that leaves no excess oxygen for the O2 sensor to detect. So, why does HHO throw off the mixtures? Your explanation and conclusion is erroneous and incomplete.