Touring MPG
Well, I've been breaking in my new Rocket; this is the third tank of gas I've gone through. I'm getting 34mpg at the moment. Does this sound about right for break in? So far I've amassed 400 miles on the odometer.
I wouldn't obsess about MPG until at least after 1000mi. It should come up a little as your engine breaks in.
I've got about 10,000mi on my Rocket. If I'm having fun with the throttle, I've gotten mid 30's on the low range and up to mid 40's when I'm cruising @65-70. I peaked once at 55MPG at high altitude with cool temps.
However I do have the Touring model which is tweaked more for torque than HP. I'm not sure how much that affects the MPG. Aside from the TOR pipes, everything is stock.
Everyone's got their own idea of how to break in an engine. I ran mine fairly hard. You just don't want to lug it down or max out RPM until 600-1000mi. I used wide open throttle from time to time but only in the middle of the RPM power band. I also used a significant amount of engine breaking. I believe this helps seat the rings well.
At any rate, definitely do not "baby" it, or the rings may never seat properly.
I haven't had mine dyno'd, but it seems to have broken in very well with this method. It doesn't burn/leak any oil and the power increased as the engine broke in. I could tell that the rings were seating well, as the engine breaking became more and more efficient.