I have a 06 Midnight Silverado with hard bags and the windshield. It is stock except for the 7 holes I did in the Stage One exhaust mod. I routinely get 40-45 and have gotten as much as 55 on a couple of rides last year. One thing to remember for those of you who have been able to ride over the winter (unlike those of us in Upstate NY who endured winter from mid Nov until April) is that that the gasoline formulation that is provided by the refiners changes for the winter due to the cooler temps. I believe this change is nation wide. I have also found that there can be a significant difference in the mileage that I get depending on the brand of gas I use. I have found that the cheapest gas per gallon is not necessarily the most economical. If you try different brands of gasoline, you may find a difference in your mileage too. I have also found that switching from one brand to another so that the tank has a mixture of brands (I now use Mobil and Hess) can result in a significant increase too - I'm not sure why though.