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Lean low-load AIR/FUEL for more MPG?
A car I'm currently working on AEM EMS (programmable engine management system) and I was wondering if any of you had success with running 19+ air fuel ratios on light load "cruising" area of map? Since no catalytic converters are required where I live it seems like this leaner air fuep ratio can help when not in boost and in light-load areas of map. Anyone tried it?
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