Well I have heard a rumor and hopefully that is all it is, at the factory after a engine is assembled they put it strait on a dyno and do a full throttle run to make sure it makes the appropriate power. However I usually start the bike let it idle until it gets warm and shut it down till it is cool, then start and ride it never let it go past the bottom of the rpm range then let it cool, then start and ride and go no higher than mid range and let it cool, then start it and ride it normally. Maybe too cautious but I have never had any problems with any bike in 17 years doing this.