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Old 12-05-2009, 09:04 AM   #11 (permalink)
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Join Date: Dec 2009
Location: Tennessee
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Calibrating the Ecometer

I have installed the Ecometer in a 2009 F-150 and the av. MPG reads high, as most seem to do. I have misplaced the instructions on how to 'calibrate' the device. Could anyone post those instructions for me? As I recall, I need to briefly unplug the device from the truck's computer.

Also, just one time, the 'av MPG' seems to have reverted to a lower number. It did not appear to be a 're-set' since the readout did not change (except over a prolonged period of time) making me think that it was still taking an good average reading, but at that suddenly lower number. I had been comparing the Ecometer with the truck's internal av. MPG readout.

Thanks for your help!

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