SteveO - as much as I would like to say that Ecu Unleashed is better for the Busa than Ecu editor, I just cannot. The only real difference I see is that Ecu Unleashed is able to modify what we call "on/off" mapping, and this is something that is more important to roadracers than streetracers. When roadracers "chop" throttle to go into a turn, on most bikes it shuts down the injectors; then, when they roll the throttle back on, the effect of "loading" the bike creates an instability. You could picture it as the bike nose-diving a bit, and then rocking back on the rear suspension. When we modify the deceleration maps using Ecu Unleashed, it does not allow the injectors to shut down, and this whole process is smoother and more stable. We find the roadracers making faster lap times with the same hp. Because I don't see this particular aspect of ecu mapping as a Busa necessity, I think the Ecu Unleashed option - which is more expensive - is not a good option for Busas. For every other bike out there, Ecu Unleashed is the way to go.
IMO, it is beneficial to add a powercommander - or any other "secondary" fuel box - to the equation. By "fine tuning" the fuel mapping, you only stand to get even more out of the bike. Take a look at this thread, and you will see what I mean:
Ecu unleashed - 2009 yamaha r1 | General Bike Related Topics
As far as the gixxer is concerned, Ecu Editor only works on 2007 and newer. Also, the Ecu Editor software is limited for the gixxers, and does not have all the bells and whistles available to the Busas. If I know what year your gixxer is, I can tell you what features are available through Ecu Editor. Ecu Editor flashing at POWERHOUSE is $60. and Ecu Unleashed tune files are $450, quite a difference. Please keep in mind that we have a guarantee with Ecu Unleashed - if, for some reason you do not like the tune, we will reflash your ecu back to stock and refund your money. We have not yet had to do this with anyone.