Ecu editor, but i am biased. LOL
Its cheaper to do ecu flashing, and there are so many more options...
For $180 you get the flashing unit, bike harness, free shift light, free shipping
www.boostbysmith.com/ecu.html or you can build one yourself for not much money. I build mine in a nice case with professional harness, test before shipping, and offer great tech support.
and can alter
fuel
timing
limiters
de-restrict the bike (go faster than 186mph)
have dual maps in the ecu
use the ecu as air shifter kill box
use ecu as nitrous control
etc
etc
etc