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Evo X General General discussion on the 2008+ Mitsubishi Lancer Evolution X

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Old 08-14-2008, 02:24 AM   #1
BluEvo210
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Evo X gas mileage?

I know we don't buy our Evos for gas mileage, but I was curious what everyone is getting. I'm also curious about the gains you get with different mods. Free flowing exhaust, intake, chip, or whatever else seems to help. And, if anyone knows what speed gets them the best fuel economy, I'm interested to know that, too.

I've calculated my gas mileage a few times (dividing the miles by the gallons to refill it), and I've come up with about 23.2miles/gallon for my 5-speed GSR. Better than the EPA rating, but not by much.

I know the owners manual says to go 50mph whenever possible, but if the indicator on the dashboard screen can be believed, my gas mileage STINKS from 50 to 55. There are a few sweet spots in the speed range...one at about 64mph, one a little below 70mph...the best seems to be 44mph. Just like my Nissans, it's the most efficient going as slow as it can in the highest gear. Some of the back roads of FL let me drive that speed when I feel like stopping to "smell the roses."

I've also input my miles and gallons on www.gasaroo.com, and got the same mpg result.

If a $600 computer were to give me an extra 2mpg, a little math tells me it would pay for itself in about 1200 miles.
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Old 08-14-2008, 03:06 AM   #2
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i get about 24



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Old 08-14-2008, 03:37 AM   #3
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Im curious myself what improvement the AMS/Buschur flash when you're taking it easy. Currently I'm getting 24.5 average and the best I've ever gotten was 27.9 with a simple cone filter.
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Old 05-17-2009, 10:36 PM   #4
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Originally Posted by rikieru View Post
Im curious myself what improvement the AMS/Buschur flash when you're taking it easy. Currently I'm getting 24.5 average and the best I've ever gotten was 27.9 with a simple cone filter.

My best with AMS ecuTek flash on the highway was 28.4 cruising between 70 and 80 using cruise control... normally its 23-24 hwy
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Old 08-14-2008, 04:40 AM   #5
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My lead foot leaves me hanging aroudn 20 most of the time >.<
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Old 08-14-2008, 05:05 AM   #6
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stock i struggled to get 21.5 mpg area....with AP Intake and test pipe back exhaust i get just under 24mpg

-Chris
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Old 08-14-2008, 08:14 AM   #7
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Originally Posted by BluEvo210 View Post
If a $600 computer were to give me an extra 2mpg, a little math tells me it would pay for itself in about 1200 miles.
1200 miles @ 23mpg -> 52 gallons
1200 miles @ 25mpg -> 48 gallons
Therefore you're paying $150/gallon. What octane are you putting in that thing!?!

(I get around 23mpg.)
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Old 08-14-2008, 09:49 PM   #8
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1200 miles @ 23mpg -> 52 gallons
1200 miles @ 25mpg -> 48 gallons
Therefore you're paying $150/gallon. What octane are you putting in that thing!?!

(I get around 23mpg.)
OK, so I was doing that math way past my bedtime...
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Old 08-14-2008, 10:18 PM   #9
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Let's try this math again now that I'm wide awake...
At $4.10/gal I'd have to save 146 gallons for a $600 computer to pay for itself.

23 mi/gal = 0.04347826 gal/mil
25 mi/gal = 0.04 gal/mi
So, there's a difference of .00347826 gal/mi

If I take 146 gallons, and divide by 0.00347826 gal/mi, the result is 41,975.01 miles.
So, a computer will eventually pay for itself, since I'm going to have the car for more miles than that...

...unless one of these tailgating Floridians totals it.
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Old 12-05-2008, 12:59 AM   #10
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Originally Posted by BluEvo210 View Post
Let's try this math again now that I'm wide awake...
At $4.10/gal I'd have to save 146 gallons for a $600 computer to pay for itself...
In a way it's too bad gas prices are down again. That makes it much harder to justify the computer to my wife.

On the other hand, she wants power more than I do, so I know we're getting a tuned computer one day! I just have to be patient.
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