Here are my recent MPG's for the two 2005's I own, I usually ride fairly conservative but occasionally punch it. Both machines have wind shields and I try to top the tank off the same each time at fill up.
32.00, 37.57, 28.24, 29.72, 30.56, 32.60, D & D exhaust, no cat, 13k miles
27.32, 39.51, 33.95, 29.51,30.00, stock with 25k miles