MPG – computer vs calculated - Page 4 - 2017 Ford Fusion V6 Sport Forum
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post #31 of 33 (permalink) Old 05-21-2019, 04:43 AM
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My last few fillups had the actual MPG higher than the computer's MPG. It was within about 1% though. Again I used a lot of data samples to average out the AFE Bias value.

* 2017 Fusion Sport, 12.7 @ 108 mph tune-only (early tune of mine, bad trans settings), full trunk w/ lunch, and dirty paper air filter
* 2014 SHO non-PP, 12.4 @ 111 mph tune-only, all day long with dirty paper air filter and worn out 30k RS-As
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post #32 of 33 (permalink) Old 05-21-2019, 12:15 PM
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Originally Posted by metroplex View Post
My last few fillups had the actual MPG higher than the computer's MPG. It was within about 1% though. Again I used a lot of data samples to average out the AFE Bias value.
I wouldn't even be mad at that lol. I just averaged my last 10 fillip discrepancies and adjusted my AFE bias. I'll grab the next 10 fill ups and see how she does to fine tune it again. As long as it's within a couple tenths I'll be happy but the 2.5 MPG high was driving me batshit.

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post #33 of 33 (permalink) Old 05-21-2019, 12:17 PM
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I changed my bias yesterday and I can tell on the way to work it wasn't calculating up as fast as normal with highway driving
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