Used the search diddnt find what I was looking for......

I know its a HArley and I shouldnt worry about my mileage, but, I am getting less than 25 mpg on my bike, all I have done to it is the SERT, Rush slip ons and a stage one SE intake, when I called the dealer today they said they will re-dyno it, but they acted like I was crazy, because some bike get different gas mileage, am I crazy because I dont hink I should have to gas up before my old lady on her sportster? I think I should be getting more than 130 miles out of a tank

 

I think a good median for a stock twin cam is 45 - 50 mpg on the highway. Tuners bump up the gas in to make up for the increased air flow. A decrease in mpg is a sure thing. I think most will tell you 10 - 20 percoent decrease is expected. 50 percent decrease is excessive. A proper Dyno tune may fix it. 25 mpg is not acceptable and don't let them tell you it is.

My wife is getting 55-60 mpg on her re-jetted 06 Sportster and I always need fuel before she does.

 

Well, I'm glad I'm not the only one! I actually get anywhere from 28 to 39 (thats the highest I've ever gotten, and I only rode 90 miles, as the nearest gas station was really far..) I should be getting at least 35 minimum in city, and 40-45 highway, but I haven't gotten any of that since the bike has been tuned. I need to find a good reliable tuner..

 

Well my Fat Bob is close to stock (Rush pipes) and last time I checked (two days ago) I got an average of 45 MPG. That tank full was over half highway driving but I'm hovering at around 80MPH on the highway. 25 MPG is crazy ... get it checked.

 

I get 40-42 round town with stage 1.

 

I have an 02 wide glide with 82,000 miles on it and still get 48 when on surface streets and 42 at 80 on the freeway, get it checked out, 25 won't get it.---jack

 

I'm averaging a consistant 57 mpg from my stock Fat Bob. I mainly use highways doing 70-80 mph.

 

my 08 fxdc with satge1 and v&h big radius pipe get about 35 mpg little less when i ride it like i stole it. then other day i got 91 oct gas and went on a 200 mile ride when i check the mileage it was about 47mpg. it was a slow ride i was riding with some friends and they slowed me down.

 

Does it look like a diesel when you roll the throttle???

 

Are you using the suggested octane or regular??