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Author Topic: 2017 M8 fuel milage  (Read 12491 times)

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FLSTFI Dave

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Re: 2017 M8 fuel milage
« Reply #15 on: November 04, 2016, 06:41:25 AM »

Dave, curious at to whether you were travelling at posted speeds most of the time or going perhaps 7-10 over posted limits? I typically travel over posted limits and tend to pay for it in fuel consumption.

DH

Simon, yea over the posted speeds.  Cruise set with speedometer at 80mph, if any thing like all my others that really means 77 mph.
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Singlebeam

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Re: 2017 M8 fuel milage
« Reply #16 on: November 04, 2016, 07:57:55 AM »

Owner's manual states 91 octane same as with the TC.  I know 91 is available in parts of the country but around here and for 000s of miles around our options are 87, 89 or 93 so I always select 93.

I always run the highest grade I can find and non ethanol too if it's available. If not I use an additive to combat the effects of ethanol. I am fortunate that there is a place near me that has 91 octane/non ethanol, Only place I but locally. It's all different when traveling.
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BigLew55

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Re: 2017 M8 fuel milage
« Reply #17 on: November 04, 2016, 08:16:47 AM »

Simon, yea over the posted speeds.  Cruise set with speedometer at 80mph, if any thing like all my others that really means 77 mph.
I would recommend confirming that with a GPS based speed reading.  Like I said above, the new ones seem to be more accurate, so there's no "cushion" between the speedometer and radar readings.  I bet you will find that 80 means 79-81...

There are apps that can use your phone for a quick reading and comparison.  I use "GPS Test" on android.  I also use a Garmin z590 now, as well.
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FLSTFI Dave

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Re: 2017 M8 fuel milage
« Reply #18 on: November 05, 2016, 08:25:19 AM »

I guess I will have to check the accuracy of the speedometer.  Could be why 80 is a bit under 3000 rpm on this and all my other CVO's 80 mph is right at 3000 rpm.  Seems the M8 is 150~200 rpm lower at 80.
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Singlebeam

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Re: 2017 M8 fuel milage
« Reply #19 on: November 05, 2016, 02:14:51 PM »

Here is mine, speedo bumping 80, tach bumping 3000.
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FLSTFI Dave

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Re: 2017 M8 fuel milage
« Reply #20 on: November 06, 2016, 06:54:22 AM »

Yesterday, all back roads, no interstate I got 53.2 mpg.  Pretty dang good in the hills of East TN.
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Fullsac Performance

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Re: 2017 M8 fuel milage
« Reply #21 on: November 12, 2016, 07:40:10 AM »

The speedo on my 2017 107 was only 1% fast on the dyno wheel. Read 101 at 100 MPH.
All of the previous years were 5-7%. I would usually add about 50 points to the cal number to correct it. This would also slow the odometer down too reducing the fuel milage calc as well. I have had to explain this more than once after dyno tuning bikes and the customers report a slight loss in fuel economy after I slowed their speedo and odometers down by 6%. In theory, with the 2017 odometer being less generous, the fuel economy gap should be even greater between the 8 valve and the Twin Cam if a person was using both odometers uncalibrated to calc the fuel burn.

SG
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Re: 2017 M8 fuel milage
« Reply #22 on: November 12, 2016, 11:08:26 PM »

I have always gotten horrible gas mileage due to my riding style never getting over 33-35 mpg on any of my bikes but even with the new bile not being broken in yet with only 1000 miles I got almost 39 mpg today and I was running pretty hard. I also checked speedo against GPOS and it was dead on. Took mileage with odo divided by gas
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Re: 2017 M8 fuel milage
« Reply #23 on: November 12, 2016, 11:58:58 PM »

I have a 2017 CVO Street Glide. I've had it for one week today. It only has 350 miles on it. Still not broke in. I made a short run today to visit my son. About 95 miles one way. It was interstate 99% of the time. I ran anywhere from 65-80 mph. I have been reading some post where people were claimimg to get very good mpg on the new bikes. Here are my results as of today. The bike is bone stock and I am 6'-3" and weigh 300#'s Keep in mind it's still not broke in yet, I am thinking the mileage will get better in time.

I never knew that the CVO had that screen available.  Can you tell me how to get to that screen?  Thanks!
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EmptyNapalm

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Re: 2017 M8 fuel milage
« Reply #24 on: November 13, 2016, 09:59:48 AM »

I never knew that the CVO had that screen available.  Can you tell me how to get to that screen?  Thanks!

+1 please.  I assume it's under the Nav section, but I don't play with the puter when I'm near the bike.  I'm riding or dreaming of riding...
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dm930

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Re: 2017 M8 fuel milage
« Reply #25 on: November 13, 2016, 10:26:09 AM »

I just went through my whole nav and setup screens and found nothing.  Mine is a 2015 CVO SG.  Is this something only found on the 2017 models?
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Re: 2017 M8 fuel milage
« Reply #26 on: November 13, 2016, 01:28:02 PM »

when the map is on you push the "data" on the bottom right side and you can change that data to speed. I assumed that came from the GPS? Am i wrong?
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Alan

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Re: 2017 M8 fuel milage
« Reply #27 on: November 13, 2016, 01:42:04 PM »

On page 150 in my Boom Box manual under Navigation Option menu...
POI's
Appearance
Trip summary
Record on
Compass
Weather (if available)
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dm930

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Re: 2017 M8 fuel milage
« Reply #28 on: November 13, 2016, 05:22:45 PM »

Found it, thanks!
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BigLew55

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Re: 2017 M8 fuel milage
« Reply #29 on: November 14, 2016, 08:30:35 AM »

when the map is on you push the "data" on the bottom right side and you can change that data to speed. I assumed that came from the GPS? Am i wrong?
Yes, that is wrong.  It displays the speed from the same source as the speedo on the dash, that being the speed sensor. 

While the GPS could display GPS calculated speed easy enough, it doesn't.  They didn't add that capability to the user interface.  And the vehicle cannot loose it's speed display just because you are in a tunnel or in the urban jungle.
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