40+ highway...and don't be a sissy when breaking it in...break like you ride it..hard..if you do not get your cylinder temp up early...you risk not seating your rings prorperly
http://www.mototuneusa.com/break_in_secrets.htm

 

I have an 08 Ultra with slipons, stage 2 and dynoed (SERT). Have about 18,000 miles on it now. At first, I was lucky to get 38. Between 5000 miles and 16,000 miles was pretty steady at 40 mph - a bit better if I rode easy and worse in a big headwind. Now I am creeping up around 42 mpg.

 

No matter what I do or how I ride I get 42mpg

 

i was getting mid thirties for the first five hundred to thousand miles. then i changed to synthetics, rp all around, and went up to forty three. i ride very easy, and i already know what my harley sounds like, so i resist the urge to blip the throttle several times at each stoplight. don't need to impress anyone but myself. odd how much fuel is used by blippin the throttle. remember looking into the throttle of a carbed bike and seeing the spray of fuel each time you rap it up? that equates to fuel doing nothing other than pleasing your ears. and at idle you know you get approximately zero mpg? i also found that i get the most practical mpg doing seventy or so, keeping it at twenty five hundred rpm's. they must get the advertised 53 mpg in their brochures in a controlled setting, like perhaps a dyno room where there is no wind resistance???

 

I have a 09 Ultra Classic also, picked it up a couple of months ago and have 800 miles on it. My first couple of tanks solo were 38mpg mix of city/hwy. Two up in the wind going 75mph was 35mpg. I do have Vance & Hines slip-ons so I may wait until 2000 miles or more to see what the mpg is like then.

 

WOW! An 09 Ultra for a couple of months and only 800 miles. Boy you have some self control.

 

Just as a friend if you like I'd be happy to help you put some miles on it, it would be a sacrifice but I'd do it for you,

 

96 Ultra FI - Factory new 99 model year EVO crate HD motor. Upgraded 97ECM w/Stage 1 map, HD touring slip-ons, SE A/C; 44-47 normal driving, hard on the throttle 40-42. Highway, 65-70 mph close to 50.

Love that EVO.

 

07 with 40,000 true dual race tuner and on a average between 37and 42 staying below 80.

 

I am getting 41 mpg with a stock bike and mostly highway miles. 53? I wish.