I currently own a 2000 Hayabusa. I'm looking to purchase a new Powercommander for the Busa. The only expierence I have with these is, I also have a 2000 TL1000R which does have the Powercommander II. Now that they are making the Powercomander III units, and they are making that one for fitment to my 2000 Busa as well. I looked at the Powercommander website, and there seems to be more maps for the old unit, the Powercommander II, Are any of you people out there usng the new units, in your 99 or 00? I guess it may be hard to find the older units new. Tom