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Old 03-12-2017, 06:07 PM   #4 (permalink)
97civichxmpg
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Join Date: Feb 2017
Location: Arlington Heights, Illinois
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I have, yes. Before any modification, I traveled from Chicago to Detroit and calculated 38.6mpg average traveling at speeds. Between 75-85mph.

I have since installed an Ultragauge, but can't rely on its mile per gallon read out due to the fact that the car has lean burn in this doesn't take into account when calculating fuel economy so I generally manually do it at the fuel pump.
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