"R" flash gas mileage
08-12-2005, 06:04 PM
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"R" flash gas mileage
I just got the new flash last week. On my last tank of gas, I got 22.26 mpg. This was 95%highway driving. Prior to that, I averaged around 20.5 mpg (on the highway). I really haven't noticed any other differences.
08-12-2005, 08:15 PM
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The car is relatively new and after reading all of the posts about the crappy mileage, I am as surprised as you are. I got 307.5 miles out of the tank and when I filled it up, it took 13.812 gallons. Looks like 22.26 mpg. The Mustang GT Vert I just sold got between 23 - 24 mpg on the same stretch of highway. It's engine was almost 4 times as big, so the mileage doesn't look that great to me. It didn't need premium either.
08-12-2005, 11:02 PM
#6
Originally Posted by Toddz
The car is relatively new and after reading all of the posts about the crappy mileage, I am as surprised as you are. I got 307.5 miles out of the tank and when I filled it up, it took 13.812 gallons. Looks like 22.26 mpg. The Mustang GT Vert I just sold got between 23 - 24 mpg on the same stretch of highway. It's engine was almost 4 times as big, so the mileage doesn't look that great to me. It didn't need premium either.
08-15-2005, 11:03 AM
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Originally Posted by juikster
I still have the M flash. should I get the latest? car seems to run ok but mileage sucks,would the update help?
08-15-2005, 04:39 PM
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Originally Posted by juikster
I still have the M flash. should I get the latest? car seems to run ok but mileage sucks,would the update help?
Mileage SUCKS now!! I used to get 20-21 MPG... now even with 90% HWY I am barely getting 18.5MPG!!!
I tend to be below 3750 RPM on 6th gear so the secondary port doesn't kick in and still mileage SUCKS.
On top of this $3.19/gallon is not helping! Guess I'll start using 87 octane from now on... My wallet is definitely suffering... "Thank you Mr. Bush!!"
Carlos
08-15-2005, 04:49 PM
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Interesting. I'm on the M flash and getting barely 20 mpg with all highway driving. Anything involving stop and go driving drops me to 18 or lower. Seems like there isn't a lot of consistancy between what happens when you get your ECU flashed.
08-15-2005, 07:28 PM
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im on N i cant break 16 mpg if my life. I did break it comming from disney at 74 miles per hour with cruise on , i only got 18 mpg 
when i had k or l i was getting 19s city and highway and 22 with cruise controll
when i had k or l i was getting 19s city and highway and 22 with cruise controll
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