OK, what can I do, without spending tons on tuners, etc, to get better gas mileage?? I'm only getting 28-36 mpg. I'm used to as much was 44 on my 2016 StreetGlide.
Gas mileage
- Thread starter bluesman
- Start date
rhino 2
100000 + Posts
Your right in the ball park MPG Wise...Don't forget you are comparing Apples to Oranges.... The T/G is quite a bit heavier, and cuts though the air like the proverbial Outhouse on wheels.....
Your gas mileage will vary a lot depending on speed, headwind, one up or two up and a whole bunch of other variables. The mileage your getting falls into the normal range of what I've seen on a TriGlide for the past 6 years. Definitely can't compare it to your old two wheeler like Rhino2 said.
- Thread starter
- #4
Kinda like the aerodynamics of a brick
I average about 32 mpg and I'm a lead foot. 
- Thread starter
- #6
I average about 32 mpg and I'm a lead foot.
I am definitely a leadfoot(lead wrist??). I thought I was gonna give up fast riding & twisties when I switched over but I can keep up with the Road Glides, no problem. Plus I can easily pop a wheelie if I want to. LOL
Jack Klarich
18000+ Posts
Is this a M8 engine?
They run richer than Twin Cams
Have you tried short shifting gears?
With knock sensors on these engines you don't have to wind em out before shifting
They run richer than Twin Cams
Have you tried short shifting gears?
With knock sensors on these engines you don't have to wind em out before shifting
ISP-FL
600+ Posts
I had just over 20,000 miles on my 16 TG when I traded for my 19. I was lucky to get 30mpg. The dealership said the new M8-114s get better mpg. We will see.
You ride 2 up though, right? So that's probably right. I ride solo so 32 mpg is OK for me. On the highway I do get closer to 38 mpg.
I've tracked my mileage on my cars and bikes ever since leaving the Marines in 67, where I had to do all that. It's just a habit.
MPG is pretty much subjective. Depends on road condition, speed, tires, wind speed and direction, temps, engine modifications, etc. My results are averaged over thousands of miles and time. On a stock TG.
Joe, In the 972 miles that I have put on the new 114 M8 trike, I have noticed that before it is even fully broken in that it seems to be getting 1-3 MPG better than my similarly equipped 107 M8. I really like the way the new engine is performing. You migrated from the TC103 but I have had two subsequent migrations to get to the 114 M8 and I notice significant improvements in the interplay between the new M8 engine and the trike itself. Much smoother and more pleasant to ride.
Past two weeks I've tracked my miles and mpg closely. 33.7 mpg on rural hi-way and city combined. 37 mpg on recent short interstate trips. Not uncommon to get 38 mpg on longer trips with gas and dash fill ups.
DK Custom Products
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Congrats on your new ride!
As already stated, mpg varies greatly based on riding habits, roads traveled, speeds, shift points, etc.
There are two things that you can do that will have an impact on MPG-
1. Run it cool, the cooler you can get it to run, the more efficiently it will produce power, resulting in better mpg. Here is a LINK to a Report on this subject.
2. Do not feed oxygen depleted air into the intake. The default setup, from the factory, does this. For very little $ you can change this, resulting in better power & better mpg. See Report at this LINK.
Kevin
MILEAGE
Mileage is what it is u are the only one that can control it. Its in the right hand. You want it get there sooner you leave earie end of it …
Mileage is what it is u are the only one that can control it. Its in the right hand. You want it get there sooner you leave earie end of it …
ISP-FL
600+ Posts
It is much smoother and nicer to ride. Just coming up on 600 miles and I haven't even tired to track my mpg yet. Good news if it gets a little better than the 107 M8 right out of the box though, because my buddies M8 got better mpg than my 103. One thing I keep noticing is that the fans continue to run after shutting it down almost all the time, whereas my 103 seldom did unless it was really hot outside.
rhino 2
100000 + Posts
My 2017 M8 Fans also ran on after i shut it off....Sounded like the Valkyrie i once had...
Joe, Harley I believe had changed the parameters between the 103's and the M8's in terms of how the fans were actuated. I think the M8 rely a bit more on ambient temps rather than just engine temps IIRC. Bob
Jack Klarich
18000+ Posts
Bob, the cylinder head temp sensor got moved to the rear cylinder with the M8 engines
It is shrouded by the air cleaner back plate, so IMO it is seeing higher temps
I'm with rhino, a triglide is heavier, and less aero dynamic. I ride a 2015 TG, with stage 1 high flow air cleaner and stage 1 screaming eagle street cannons . I also upgraded the ECM. I average between 36 to 42 depending on how hard I ride. About what everyone else is getting.
I have wondered...does it hurt anything to pop a wheelie?
Not sure what I get "miles per gallon," BUT I know I get PLENTY of SMILES PER GALLON!
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