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General Category >> Rubber Side Down! >> Substantial increase in gas mileage. Why?
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Message started by Greg on 04/27/13 at 15:05:51

Title: Substantial increase in gas mileage. Why?
Post by Greg on 04/27/13 at 15:05:51

I always check my mileage. The last 2 tanks showed huge increases. I used to get 42 or 43 mpg. The last 2 tanks were 51 and 52 mpg. The only changes that I can think of to the bike have been the extended forks but I had them for a few tanks before the increase. I gained 10 pounds but I doubt that would help. The weather has been in the 50s and 60s the last couple of tanks so perhaps that could be it. I also changed my oil and switched to Rotella dino but I think I did that more than 2 tanks ago but am not sure. My flame shooter and farter on shutdown is also very subdued. Can the warmer weather cause this? Not that I'm complaining mind you.

Title: Re: Substantial increase in gas mileage. Why?
Post by Serowbot on 04/27/13 at 15:22:11

Either that,.. or gaining the 10lbs has made you more mellow, and your using less throttle...

Food that soothes the Savage beast... ;D...

Title: Re: Substantial increase in gas mileage. Why?
Post by Dave on 04/27/13 at 15:38:31

Did you buy fuel at the same locations you always have?  Any chance that you make have gotten fuel without ethanol for the last 2 tanks?

Title: Re: Substantial increase in gas mileage. Why?
Post by SALB on 04/27/13 at 15:43:50

When it was really cold this winter, I had one tank drop down to 27mpg. [smiley=cry.gif]  I'm also not convinced that the winter blend gas doesn't get worse mileage. [smiley=undecided.gif]  But hey, I wouldn't complain!

Title: Re: Substantial increase in gas mileage. Why?
Post by verslagen1 on 04/27/13 at 16:51:07

50 is what you should get.

what petcock?
what jets?
what exhaust?

Title: Re: Substantial increase in gas mileage. Why?
Post by Greg on 04/27/13 at 17:29:34

I try to buy my fuel at the local ethanol free station. Sometimes it isn't practical. I do get gas at the same 2 stations unless I am out and about. These last 2 tanks had ethanol. I have the Raptor petcock, an HD fishtail muffler, K&N drop in, and if I remember correctly my jets are 52.5 and 155 but I am not certain of the latter. I wonder if it is the winter gas versus summer gas. After my mods last summer/fall I was getting 48 or 49 mpg. That was with a Screamin Eagle muffler instead of the fishtail I have now. I definitely don't ride like an old lady.

Title: Re: Substantial increase in gas mileage. Why?
Post by WD on 04/27/13 at 17:43:45

Come fix mine... at 36 mpg average, it isn't worth repairing it. Maybe some of your fuel economy magic can help negate the sail effect from the 15" apes and 240#, 6'2" rider...

Title: Re: Substantial increase in gas mileage. Why?
Post by Greg on 04/28/13 at 07:34:55


1E0D490 wrote:
Come fix mine... at 36 mpg average, it isn't worth repairing it. Maybe some of your fuel economy magic can help negate the sail effect from the 15" apes and 240#, 6'2" rider...

All you need to do is gain 10 pounds...  ;D

Title: Re: Substantial increase in gas mileage. Why?
Post by Boofer on 04/28/13 at 19:23:27

Greg, I don't know how this could work, but extending forks may be letting you fill the tank differently. But that aside, I get 53 all the time unless I'm riding with a law abiding group...then 60 mpg. So you would post if your apple tree started suddenly sprouting $100 bills?  ;D

Title: Re: Substantial increase in gas mileage. Why?
Post by ToesNose on 04/29/13 at 04:08:13

Oh and if anyone's apple tree starts sprouting $100 bills please let us know, along with your address!   ;D

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