I have had my bike for three weeks and a day, just about to hit 1000 miles on it. Had my 600 mile service done at 583 miles (including the TBS, of course) and I have not noticed a change in my fuel consumption. The bike wants to run, and I let her. I average around 37 to 38 mpg, across the board. I use Shell 89 octane gas everytime, and make every attempt to fill it to the bottom of the fuel neck as shown in the owner's manual. I get about an inch from the bottom of it, before the nozzle shuts off, so my calculations are pretty much dead on. I KNOW my problem is too much throttle. I say, just ride it like it was meant to be riden, hard and fast, put some miles on it, get it out of your system, and then go from there. I love this bike, and even if I only get 25 mpg, I wouldn't complain, because that is still 11 mpg more than my 00' Silverado gets.
P.S. TwoWheelNut, you are hilarious. I laugh at everyone of your posts. We have to get together and ride...........See ya!
Aaron