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Old 04-09-2014, 11:39 AM   #1
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Miles To E Question

This is for everyone with a tune, previously before my tune when I filled my tank I would have 273 miles to E. Now with my new tune it is around 330 miles to E, but my question is the validity of this. My drive to and from work is 10 miles even. This morning I started at 275 miles to E, when I got to work it was at 248 miles to E, this was all with normal driving. Is this normal for a tune to mess up to the calibration, or is my tune wrong (like they put in the wrong octane)? Or is it because I have a larger CAI?
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Old 04-09-2014, 11:57 AM   #2
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This is for everyone with a tune, previously before my tune when I filled my tank I would have 273 miles to E. Now with my new tune it is around 330 miles to E, but my question is the validity of this. My drive to and from work is 10 miles even. This morning I started at 275 miles to E, when I got to work it was at 248 miles to E, this was all with normal driving. Is this normal for a tune to mess up to the calibration, or is my tune wrong (like they put in the wrong octane)? Or is it because I have a larger CAI?
Hey,

I noticed the same exact thing you are describing on my own 2011. This actually has very little to do with the tune, but rather just cars computer.

The cars computer will calculate your average miles per gallon based on your driving habits over time. From here the computer will take your miles per gallon and multiply it by the amount of fuel the computer is reading left in the tank. This number gives you the miles per empty.

However this number can only be an estimate because your average miles per gallon is based off highway and city driving. So when you are driving in around town the miles till empty will lower quicker than the odometer, while on the highway under ideal conditions your miles till empty will lower less quickly than the odometer.

Essentially you have nothing to worry about when it comes to the tune on car.

I hope this information makes sense and helps.

-Dan
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Old 04-09-2014, 12:14 PM   #3
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Dan is right here. I have noticed that when on the highway it drops at one rate and in town another. One thing i will say is that my MPG isn't really any better after tune. I will have to admit though is that I do have a lead foot lol.
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Old 04-09-2014, 12:50 PM   #4
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Well before my tune the mpg droppage would be correct. It would only go down 10 miles to work, that is why I am wondering what is going on now.
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Old 04-09-2014, 02:41 PM   #5
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Well before my tune the mpg droppage would be correct. It would only go down 10 miles to work, that is why I am wondering what is going on now.
Before the tune did u ever reset the mpg calculator on the dash?
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Old 04-09-2014, 04:24 PM   #6
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2011+ only remember the last 500 miles for the estimate. I don't recall the source, but it is not like some cars (like my Insights) that can tell you the lifetime average. Since things change, like winter fuel, weather, drivers, so on, the estimates change over time.
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Old 04-09-2014, 08:36 PM   #7
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Before the tune did u ever reset the mpg calculator on the dash?

Negative.
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Old 04-09-2014, 10:05 PM   #8
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Negative.
I think the miles to E have to do with the mpg calculator on the dash. I've notice when I reset the mpg calculator while I'm on the hwy my mpgs will say 30 or & it'll make my miles to E go up. It's probably more inconsistent now because u reseted the mpg calculator when u uploaded the tune.
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Old 04-09-2014, 10:26 PM   #9
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It seemed to be more accurate on my drive home. No idea why. Maybe it'll go back to normal once it gets use to the tune, my driving, and a new tank of gas.
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