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Old 09-19-2012, 12:48 PM   #6 (permalink)
Fat Charlie
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Join Date: May 2011
Location: Route 16
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Al the Third, year four - '13 Honda Fit Base
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90 day: 42.9 mpg (US)
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Don't calibrate it the way they want you to. Take it with you to the gas station and fill up, then install and configure the UG and zero out your trip odometer. Use that tankful to get used to having the UG, but don't take its mpg readings as fact. At your next fill up, calibrate it to your trip odometer and pump receipt. Your car's odometer is more accurate than the DOT crew that pounded signs in once, and hundreds of miles are a more accurate calibration sample than just one.

While your first tankful isn't going to have "real" mpg numbers, the trend will be perfect- it doesn't matter if it says you're in the 20s or the 40s, it's telling you what's good and what's bad. So just slap it in and let it start helping you out.

Originally Posted by sheepdog44 View Post
Transmission type Efficiency
Manual neutral engine off.100% @MPG <----- Fun Fact.
Manual 1:1 gear ratio .......98%
CVT belt ............................88%
Automatic .........................86%

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