I ride to work 70 miles one way and I get 145 miles with 4 bars, 87 octane, no o2 sensor pcm III and a akrapovic slipon, mapped to factory, and excell pump free software for my PCM III from dynojet.

 

Actually I don't think that's true. Odometers have to be highly accurate, while speedos are permitted to lie. All cars exaggerate speed, GM being the most accurate and high-end Euro sports cars being the worst. I believe bikes lie worse than any cars. They are not tied directly together, even though that would make sense, so technically your odo should read the same as before. I would like to see a before/after test though just to see.