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Lost and Confused
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Discussion Starter #1
Hello All,

New to the forum so take it easy with me!:)

I recently picked up a 2010 FLHTK from a second owner. After running a couple fuel tanks my calculations came around 31mpg.

The bike has SE air cleaner, SE tuner and a set of Reinhardt true duals, the PO also said that is has 240 cams? Cant find any info on them.:mad nor the PO has any documents on the work done.
The bike runs great and has a pretty good lope to it, I can see at the end of the pipes that is running rich. Base on my searching other people are getting around 40ish mpg for basically the same set up.

Can I play with the tuner and adjust the fuel to milk a better gas mileage?

Thanks in advance:)
 

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Lost and Confused
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106 Posts
Discussion Starter #2
Here is a dyno sheet I found in the tour pack alone with the SE tuner cartridge.

 

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Lost and Confused
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Discussion Starter #3
Hopefully some one knows how to read the dyno sheet and be able to tell me if the A/F is set too rich.:)
 

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I'm set up similar and get about 38 highway. City mileage with hard takeoffs would bring me down to about 32.
 

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31 is right around what i have gotten out of 2 different Ultra Classic.
 

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Smiles. A lot!
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Welcome from eden nc...

It is also my experience fuel economy depends greatly on the wrist action as well... With that torque that you are pushing... I can see that it would be in the low 30s...lol

Sent from Motorcycle.com App
 

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I think all of the 38 to 42 mpg riders are talking highway miles at a steady speed.
 

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240 cams ?
You sure its not SE-204 cams !
Looks like your gonna have to pay dearly for that 10 HP increase . Is it worth a 10 MPG hit ?
Although the HP & Torque figures are pretty dog-gone good .
 

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You are definitely not running rich, IMO.

I am in the 36-38 with mixed use and can hit 40-41 if I stay below 70 mph highway cruise. I have stock cams though.

Are you calculating the gallons using the gas pump? I only ask because if you are assuming you are pumping six gallons into the tank, you may not be. It is actually a bit of a tedious task to fill the new tanks completely full.
 

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Lost and Confused
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Discussion Starter #11
I'm set up similar and get about 38 highway. City mileage with hard takeoffs would bring me down to about 32.
31 is right around what i have gotten out of 2 different Ultra Classic.
Thank you for you comments, looks like the numbers are about right with my set up:mad
 

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Lost and Confused
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106 Posts
Discussion Starter #12
240 cams ?
You sure its not SE-204 cams !
Looks like your gonna have to pay dearly for that 10 HP increase . Is it worth a 10 MPG hit ?
Although the HP & Torque figures are pretty dog-gone good .
They could be SE-204 the PO didn't know much about the mods.

I love the power but I might replace the cams back to stock ones, my plans is to make a few long distance trips, I rather have the long range mileage vs. power

You are definitely not running rich, IMO.

I am in the 36-38 with mixed use and can hit 40-41 if I stay below 70 mph highway cruise. I have stock cams though.

Are you calculating the gallons using the gas pump? I only ask because if you are assuming you are pumping six gallons into the tank, you may not be. It is actually a bit of a tedious task to fill the new tanks completely full.
Yes, my calculations were made using gas pump. I went for a 120 miles ride and I used almost 3/4 of a tank.: what?
 

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Lost and Confused
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Discussion Starter #13
Thank you for the comments,:)

So guys, the A/F readings are good based on the dyno chart?

If am in the 38-40 mpg range I be happy.

Can I gain the extra miles with a fine tuning on the SERT or replacing the cams is the only way?:(
 

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Thank you for the comments,:)

So guys, the A/F readings are good based on the dyno chart?

If am in the 38-40 mpg range I be happy.

Can I gain the extra miles with a fine tuning on the SERT or replacing the cams is the only way?:(
You might be able to lean it out a little, but I don't think you will see a 7-8 mpg improvement. That dyno run shows the bike is set up to make good torque a lower RPMs. It takes fuel to make power, and you are making power right in the sweet spot of the cruise range.
 

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Thank you for the comments,:)

So guys, the A/F readings are good based on the dyno chart?

If am in the 38-40 mpg range I be happy.

Can I gain the extra miles with a fine tuning on the SERT or replacing the cams is the only way?:(
You can NOT go by the fuel gauge !!!!!!!!!!!!!!

Fill tank Full to the top, set trip odometer , go for a LONG putt, fill tank back to the top, record how much fuel you used and how many miles you rode.......do the math .
 

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Lost and Confused
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Discussion Starter #16
You might be able to lean it out a little, but I don't think you will see a 7-8 mpg improvement. That dyno run shows the bike is set up to make good torque a lower RPMs. It takes fuel to make power, and you are making power right in the sweet spot of the cruise range.
Cool,

So am going to do my homework to see what all takes to do the cams to return her to stock internals.

Am getting too old, speed not a factor, just want to cruise across the states and not doing it 150 miles at the time.:)
 

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Lost and Confused
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Discussion Starter #17
Fill tank Full to the top, set trip odometer , go for a LONG putt, fill tank back to the top, record how much fuel you used and how many miles you rode.......do the math .
Thanks Webco2, that's how I do it:)
 

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Cool,

So am going to do my homework to see what all takes to do the cams to return her to stock internals.

Am getting too old, speed not a factor, just want to cruise across the states and not doing it 150 miles at the time.:)
Your setup now is almost ideal . The little that you may save on fuel by changing it all back will not equal the "fun-factor" you will lose .

I'm running SE203's and I get about 32mpg all around, with a boost to almost 34 for just Hwy riding only. If you just have to have more miles between fuel stops, you may want to look at a Aux. fuel tank .
 

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Lost and Confused
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Discussion Starter #19
Your setup now is almost ideal . The little that you may save on fuel by changing it all back will not equal the "fun-factor" you will lose .
I agree:thumbsup
The more I ride it the more I get use to, I have a couple months to figure it out.

If you just have to have more miles between fuel stops, you may want to look at a Aux. fuel tank .
That's always an option:)
 

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My bike is a 2002 FXSTDi (TC88b) has S&S 509 cams, Hypercharger, Cobra Longshots, and PCV I am getting 32-35mpg riding normally...If I baby it I can get 35-38....Before cams...I was getting 42-45mpg.

It's a price I will gladly pay....
 
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