Mileage test
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Intermediate
Joined: Mar 2008
Posts: 38
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Mileage test
Last weekend I set out to see what kind of mileage and tank range I could get on my 08 Ultra. Riding east of Burney CA towards Alturas, Cedarville and Gerlach NV I was able to get 257 miles out of the 6 gallon tank with .8 of a gallon left. I also got 49.4 miles to the gallon. I was riding fairly soft and didn't go over 70 mph. I am amazed at these numbers from such a big bike.
Road Captain
Joined: Feb 2008
Posts: 597
Likes: 35
From: On the lake, Ohio
RE: Mileage test
MikeB: That is excellent mileage. How many miles do you curently have on your 08 Ultra? I have under 3500 on my 08 FLHR and best I've done is 41 mpg with same mods. Worst was 30 mpg last weekend at 65 mph with 20-30 mph winds evengusting higher. I felt like a kite! Good for you on you mpg.
Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
RE: Mileage test
That's about the upper end of what the TC96 can get, IMO. My '07 SG can manage 50mpg, but not much more, on easy backroads riding--lower in city. No amount of further tweaking will realize better mileage on this bike, so I think I'm at my limit. Last week I got 50mpg going to Gulfport, MS on the backroads, 45mpg on the return trip via I-10 with a moderate headwind and ~70mph cruising speed. I was very happy with that.
A friend in Lafayette, LA says he's gotten 50mpg on his '08 Ultra, which is stock, so it is certainly doable. If you are running closed-loop without the 14.2:1 change via SERT, you are running 14.7:1 in the cruise range with or without the Stage 1 download. This is most of the reason for good mileage on stock bikes, but usually this means more heat, as the A/F in closed-loop mode is very lean.
I have the PCIII with a map obtained from Fuel Moto that has been tweaked for mileage, Rush with FM custom baffles, and K&N AC. There are quite a few threads already here that discuss increasing mileage with the PCIII, and the same techniques would work with SERT.
A friend in Lafayette, LA says he's gotten 50mpg on his '08 Ultra, which is stock, so it is certainly doable. If you are running closed-loop without the 14.2:1 change via SERT, you are running 14.7:1 in the cruise range with or without the Stage 1 download. This is most of the reason for good mileage on stock bikes, but usually this means more heat, as the A/F in closed-loop mode is very lean.
I have the PCIII with a map obtained from Fuel Moto that has been tweaked for mileage, Rush with FM custom baffles, and K&N AC. There are quite a few threads already here that discuss increasing mileage with the PCIII, and the same techniques would work with SERT.
Tourer
Joined: May 2007
Posts: 499
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From:
RE: Mileage test
I've been getting 30-35 mpg. Now at 4K I've gotten 40 mpg on the last two tanks with a mix of in-town, freeway, and twisty coast range roads with no restraint on the throttle.
