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post #1 of 18 (permalink) Old 07-10-2012, 08:27 PM Thread Starter
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Need better mileage.

I have a question on fuel mileage. I have a 2011 FLTRX with the 103, vented lowers, tour pac and about 3500 miles on the clock. At 1000 miles I added a full Rush exhaust (2 baffles) and this last weekend at 3200 miles I added the SE ventilator and Thundermax tuner.
I have a couple of questions regarding fuel mileage.
My first question is how do I improve my mileage? Since new my mileage has ranged between 34.5 to 38.5 and I do not ride hard but I always get in the same mileage range, which is always way less than most people on this form get even with modified bikes. And yes mileage does matter to me and its one of the reasons I bought the new bike, I like to take long rides and I need to get better than 35 mpg. I have only one tank with the Thundermax and it came in at 35.4 mpg.
My second question is regarding the distance remaining gauge. I own a car wash in the next town over 14.8 miles to be exact however; the distance remaining will drop over 12 miles within the first 4 miles ridden and by the time I get to the car wash the distance remaining will usually drop 27 miles. This is driving me crazy since its not all up hill and like I said before I do not ride real hard. On the return trip usually 3 hours later the distance remaining will usually drop only 15-16 miles. I was thinking that maybe the bike being cold when I start could be part of the problem but the outside temp has been well over 100 for the past few weeks.
More info:
I live mile in on a rock road so the first and last mile is always slow speed.
I had always fueled up at the same Conoco station, just changed to a Shell station two tanks ago.
Any advice on how to get my mileage up? What RPM range should get the best mileage? If I need to change my riding style I will.

Thanks and have a great ride.
Black Sheep
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post #2 of 18 (permalink) Old 07-10-2012, 08:43 PM
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Several things could be causing your problem, one of which, taht many people forget is the speedo/odo calibration. Have you checked the miles recorded vs mile markers or better yet by GPS?? I temporarily hung my GPS on the bike, showed I was off by 5% across the board.
My TTS tuner allowed me to change the speedo calibration, not sure if the Thundermax does or not.
Unfortunately I know nothing about the thundermax, but there has to be a way to lean down the mixture in the highway cruise ranges, that's where most of your mileage will be gained.

My last 3 bikes have all been similarly tuned, and all got in the 38-42mpg range depending on how I rode them. 35mpg would upset me too.

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post #3 of 18 (permalink) Old 07-10-2012, 09:13 PM Thread Starter
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speedo cal

When I received the tuner from Frank @ Dragos I saw that he had put a speedo calibration in the preload. Didnt seem to make a difference on the first tank anyway. Once I fill the bike it always starts out with only 206 miles on the distance remaining gauge, I see most people get around 250 miles shown. Once while on a trip with a hot bike it went up to 225 miles remaining but, I still only logged 38.5 mpg on that tank.
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post #4 of 18 (permalink) Old 07-10-2012, 09:52 PM
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I have put a lot of miles on my '09 and it has been in different stages of mods and have only gotten 36-42 mpg since new. It does not seem to make much difference if I am riding 2-up or not.

Maybe some people "calculate" the mpg in a more conservative way. Just like some people always get a much better deal on the purchase price than anybody else can find. Seems like some small detail is left out of the calculations in the end.
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post #5 of 18 (permalink) Old 07-10-2012, 11:49 PM
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I usually range between 36/38 around town and 40/42 on the highway. I have done as well as 50 on the highway when I was part of a pack ride and was sitting about 3 ranks back from the front. I guess I was picking up a good draft. Usually I'm up in the front and don't get that extra help.

I calculate my milage when I fill up. Miles driven (odometer) divided by gallons purchased (fuel pump) gives me my mpg. Reset the odometer every time. I do like the fact my 2012 has 2 trip meters. I can keep reciepts and do an overall milage if I'm so inclined. I haven't done that yet though. Too lazy I guess. :-)

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post #6 of 18 (permalink) Old 07-11-2012, 03:42 AM
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Quote:
Originally Posted by Black Sheep View Post
I have a question on fuel mileage. I have a 2011 FLTRX with the 103, vented lowers, tour pac and about 3500 miles on the clock. At 1000 miles I added a full Rush exhaust (2 baffles) and this last weekend at 3200 miles I added the SE ventilator and Thundermax tuner.
I have a couple of questions regarding fuel mileage.
My first question is how do I improve my mileage? Since new my mileage has ranged between 34.5 to 38.5 and I do not ride hard but I always get in the same mileage range, which is always way less than most people on this form get even with modified bikes. And yes mileage does matter to me and its one of the reasons I bought the new bike, I like to take long rides and I need to get better than 35 mpg. I have only one tank with the Thundermax and it came in at 35.4 mpg.
My second question is regarding the distance remaining gauge. I own a car wash in the next town over 14.8 miles to be exact however; the distance remaining will drop over 12 miles within the first 4 miles ridden and by the time I get to the car wash the distance remaining will usually drop 27 miles. This is driving me crazy since its not all up hill and like I said before I do not ride real hard. On the return trip usually 3 hours later the distance remaining will usually drop only 15-16 miles. I was thinking that maybe the bike being cold when I start could be part of the problem but the outside temp has been well over 100 for the past few weeks.
More info:
I live mile in on a rock road so the first and last mile is always slow speed.
I had always fueled up at the same Conoco station, just changed to a Shell station two tanks ago.
Any advice on how to get my mileage up? What RPM range should get the best mileage? If I need to change my riding style I will.

Thanks and have a great ride.
Black Sheep
First make sure you fill the tank to the same level each time. Then calulate your mileage with the odem. miles and gal. bought. Most importantly have your bike tuned. Can maps are just a starting point, not a final tune.

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post #7 of 18 (permalink) Old 07-11-2012, 06:42 AM
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If your T-Max has not had the a/f ratio altered from where Zipper's sets them stock, your are running about 13.7 a/f at the throttle range normally used to cruise. Your mileage is average for that a/f setting. Leaning the fuel to a range of 14.2 will usually gain about 3 mpg. The T-Max can be adjusted in the a/f ratio pages and will learn those changes with some riding time. Like Frankie said, no auto tune module will give you a perfect tune, (only a GOOD dyno operator can do that) but the T-Max does a good job.


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post #8 of 18 (permalink) Old 07-11-2012, 07:29 AM
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One thing not mentioned is the location and terrain where you ride. If you are in Colorado or some similar altitude you will not get great mileage.

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post #9 of 18 (permalink) Old 07-11-2012, 07:43 AM
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Quote:
Originally Posted by faststan View Post
One thing not mentioned is the location and terrain where you ride. If you are in Colorado or some similar altitude you will not get great mileage.
Yep, the only time I got noticably better mileage was at higher altitudes. Seems to make a big difference.

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post #10 of 18 (permalink) Old 07-11-2012, 08:53 PM
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I am in Colorado and get respectable mileage. Average 47mpg (city and highway) running 14.1 on my AFR. Having a tuner where you can adjust AFR is a big plus. Before I added the AT I was averaging 42 mpg at best.

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