Thread: Shooting for 35 mpg
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Old 04-29-2012, 11:55 PM   #8 (permalink)
GRU
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Join Date: Oct 2011
Location: Windsor ON Canada
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silver bullet - '00 Honda Civic
90 day: 34.41 mpg (US)
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The reason you should put the cat back on is it doesn't hurt fuel economy unless it's plugged up. o2 sensor problem will hurt your fuel economy if it's not working propertly
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