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Old 06-25-2009, 08:41 PM   #9 (permalink)
basjoos
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Aerocivic - '92 Civic CX
Last 3: 70.54 mpg (US)

AerocivicLB - '92 Civic CX
Team Honda
90 day: 70.97 mpg (US)
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The FE boost you see when driving when the humidity is high is the equivalent of inert gas injection, since water molecules take the place of some of the oxygen that the engine could have been sucking in if the humidity was low.
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