Just bought a new 2012 Ultra Limited and decided to make some changes. Fullsac X pipe, Rinehart 4" slipons, SEAC, SE adjustable pushrods, Woods 555 cams, SE Pro Super Tuner, dyno run. I think the bike sounds great and runs good (88hp and 100tq) but the gas mileage seems to be really low. I have about 500 miles and the last tank of gas got me only 27 mpg while not riding hard. My only concern is if this is normal mpg or is bike not running properly.

I will post the results of the dyno run and soon as can figure out how to do it.

 

It will get better as everything breaks in, I wouldn't expect much more than in the mid 30's though. Cubic inches and power has it's own gas tax !

 

seems low to me,,, but when you get somthing strong, you (i) tend to push it more than i realize.... im getting around 35/38 mpg

 

27 miles per gallon would be normal for a bad tune.

 

here are the dyno runs.

 

compare to stock would be about 43 MPG at 65-70 mph cruising

Mike

 

There you go. That is so hard on a bike. Do you have a copy of the finished map?

 

The curves on your dyno look good but it looks a little fat at the rpm you are in quite a bit. Of course thats only part of the story because that is at 100% throttle position. Lonewolf can help you out if you have what hes asking you for.

 

Your "before" baseline run shows an A/F table, Why doesn't the "after" tune run show it? The mileage suggests you got a typical rich "power" tune. When will these tuners stop applying conventional carburator wisdom when tuning EFI?

 

Ive got a 2010.bone stock 36 mpg