Blame it on EPA / CARB emission regulations, because of these 3 facts:
• best POWER occurs at about 12:1 AF-ratio, for E0 gasoline.
• best ECONOMY occurs at 16-18:1 AF-ratio, for E0 gasoline.
• todays ECM's maintain 'stoichiometric' 14.7:1 AF-ratio in "closed-loop" operation for catalytic convertor operation.
Last edited by gone-ot; 09-09-2013 at 08:03 PM..
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