So what is the real issue? A "technology" that has been around for 30 years and keeps getting picked up based on the price of fuel. Sure, if you can run lean and get the same amount of energy out, you're set. However, either:
1) You're making up the difference with additional combustible fuel. In which case, the arguement is the "additional fuel" arguement.
2) You're citing the old SAE paper where they used LOTS of hydrogen, enough to modify combustion stoichiometry.
In the case of (1), that's an easy myth to bust. In the case of (2), where leaning is better, then great. But guys with PVC in their trunk aren't making enough Hydrogen relative to other intake needs of their ICE. They're just not.
To top it off, seems like the vast majority of guys with fishtanks in their backseats aren't doing anything to lean, or otherwise modify their mixtures.
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