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Old 06-12-2006, 07:35 PM   #8
JohnMc
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Join Date: May 2004
Location: St. Louis
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The AFR is merely derived from the remaining amount of oxygen present in the exhaust. Ethanol will give the same sort of reading on the O2 sensor at stochiometric as gas would. No changes needed. A wideband gauge would still show 14.7, though, as it has the gasoline specific exhaust oxygen to AFR conversion table hard coded into it.
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