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How is appropriate AFR calculations achieved for a wide variety of engines based on displacement, exhaust, engines mods, etc.?

April 26, 2017achieved AFR appropriate based displacement engines exhaust variety wide

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How is appropriate AFR calculations achieved for a wide variety of engines based on displacement, exhaust, engines mods, etc.?

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The reality is that, except in extreme cases, all H-D engines, including the V-Rod, respond best with certain AFRs in certain places. For example: For best idle and off idle response the AFR is 13.0-13.2. For best fuel economy in cruise that number is 14.3-14.5. And for a best power scenario, the AFR drops to 12.9-13.2. These numbers are not a guess but the result of countless hours of dyno and real world testing by not only the team at RP but top tuners around the country.