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Discussion Starter #1
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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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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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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Dang there must be something wrong with mine I get like 16 mpgs if i am realy nice to in LOL.I better get that checked out.
 

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I am mostly highway, average from 25.5-28 mpg depending on what speed I am carrying. 60-65mph seems to be my most efficient cruising speed. I always catch a section of traffic on my commute which usually brings down my average, but if I get a clean run I am touching the 28 mpg figure. My car is stock with the lastest reflash and a HKS filter.
 

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Before I install all my newly arrived parts. I only get about 18.5 mpg and I do about 60 percent highway driving. The on ramps kill me. They are all clover leaf shaped here on my way to work I have a hard time not drilling through like 3 of these to and from work.
 

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Hero of the day - 4/5/09
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^ Isn't that the truth, Thankfully my commute all the on ramps are straight run on types. But those long winding ones are just addiction in the making.
 

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Discussion Starter #13
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...
:tumbleweed:
 

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Discussion Starter #15
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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I get like 13 MPG.... but I drive aggresively
 
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