2014 Ultra Classic MPG
Extreme HDF Member
Joined: Sep 2010
Posts: 14,744
Likes: 402
From: Phoenix '53, '88, '09 Big Twins
speed, terrain, throttle wiggling, % of ethanol in your pump gas come into play
lower than specified octane fuel will give less mpg, as the ECM cannot fully adavnce ignition timing
gear selection also plays into this- going into 6th gear at 55 MPH may result in lower revs, but it may be that the motor is more efficient at higher rpm range.
My 09 96" with stage 1 is dead on 43 mpg- cruising between 70 and 75 mph
stock it was 44 mpg
our fuel here is typically 10% iowa farmer subsidy
MPG will also increase at the motor wears in, less internal friction. as you get up past 5K you may see quite a rise.
mike
lower than specified octane fuel will give less mpg, as the ECM cannot fully adavnce ignition timing
gear selection also plays into this- going into 6th gear at 55 MPH may result in lower revs, but it may be that the motor is more efficient at higher rpm range.
My 09 96" with stage 1 is dead on 43 mpg- cruising between 70 and 75 mph
stock it was 44 mpg
our fuel here is typically 10% iowa farmer subsidy
MPG will also increase at the motor wears in, less internal friction. as you get up past 5K you may see quite a rise.
mike
Last edited by mkguitar; Feb 6, 2015 at 09:51 AM.
Seasoned HDF Member
Joined: Jun 2012
Posts: 6,157
Likes: 2,564
From: CT/FL
The mileage from my Road King increased from 38-39 to 43-44 when I added exhaust, intake and PC. So depending on where you live and how you ride the heavier bike should get a little worse mileage stock.
Road Warrior
Joined: Nov 2013
Posts: 1,814
Likes: 11
From: USA
I only got 600 miles on my '15 Ultra Classic before I had to put it away for winter but I checked mpg on every tank (ok that's only 3 tanks) but mine was dead nuts on 40mpg and I broke the bike in hard.
My dyno run put 46 miles on the bike and it took exactly one gallon to fill.
My dyno run put 46 miles on the bike and it took exactly one gallon to fill.
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