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Breaking in my evo.. getting 10mpg. hmm

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Old Feb 21, 2005, 11:37 AM
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Breaking in my evo.. getting 10mpg. hmm

I've been taking it real easy breaking her in. boy i hope i get better mileage than this... maybe i'll have to bring her in to the dealer already..
Old Feb 21, 2005, 11:43 AM
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yeah, if your getting 10mpg something is wrong. i got 300+ miles a tank when i was breaking mine in.

unless your definition of breaking in involves lots of track time and a majority of the engine time about 5000rpm...
Old Feb 21, 2005, 11:45 AM
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Mine breaking in was really bad too... like ~12 mpg, and that's BOTH times I had to break it in... but we won't get into that... and as the miles rolled on, it got better and better, and now with my TBE it's even better... Your ECU is just probably one that's running extra rich, get a tune or an S-AFC
Old Feb 21, 2005, 12:16 PM
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Highest I have ever got is about 240 miles on one tank....about 21 mpg? Most of the time I get 200miles flat. This is with a TBE and an upgraded intercooler. Still running rich
Old Feb 21, 2005, 12:40 PM
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Take it to the dealer. 10MPG with break-in driving = problem.
Old Feb 21, 2005, 12:43 PM
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man there is a problem, i use to average over 200mi per tank and still do now, i usually get between 200 and 300 per tank.
Old Feb 21, 2005, 12:54 PM
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yea 10 mpg...dats bad...take it 2 dealership
Old Feb 21, 2005, 12:55 PM
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There's always how long you let it idle in a million different places
Old Feb 21, 2005, 12:59 PM
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Originally Posted by KevinD
unless your definition of breaking in involves lots of track time and a majority of the engine time about 5000rpm...
How else would you "break in" an EVO??? 6 - 7 mpg on 100 octane at the racetrack sounds about right to me.
Old Feb 21, 2005, 01:05 PM
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Originally Posted by johnnysixer
Highest I have ever got is about 240 miles on one tank....about 21 mpg? Most of the time I get 200miles flat. This is with a TBE and an upgraded intercooler. Still running rich
240miles one tank? i believe that's about 18MPG unless my math is really wrong here. Usually a refilled tank is about 13gallons so 240miles over 13 gallon is about 18miles per gallon.
I got about 270+ to 280+ which is about 22mpg
Old Feb 21, 2005, 02:52 PM
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you're either calculating wrong or something is wrong with your car. i was getting over 300 miles per tank when i was breaking it in.
Old Feb 21, 2005, 05:47 PM
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It might be something dumb like your fuel level sender not working right. Who knows, it could be A LOT of things.

As I recall however, I did get very bad mileage my first tank or two. After that, I was getting like 25 mpg on 93. Then i switched to sunoco 94 and I get like 20 mpg.
Old Feb 21, 2005, 07:11 PM
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i'll burn another tank through it and see what it does.

last time i filled it up. 103miles and 9.43 gallons... so i guess 11mpg..not 10

my tank was down to half way- on the gauge- at like 50-60 something miles...
Old Feb 21, 2005, 10:00 PM
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usually on any car the first tank of fuel is the worst mpg

https://www.evolutionm.net/forums/sh...d.php?t=107398
Old Feb 22, 2005, 10:49 AM
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I thought our tank was 11 gallons?



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