No most busas are off. Mine is oly off 2% now because of my gearing 19/41 is right on to gps and yellow box but you need a heck of a lot of HP to make it work well. If I remember the 70 and below is only off by about 5 PERCENT. climbs being off as the spped goes up.Hey Ninja Eater,
is it always 7.6% off? In otherwords, if it reads 70MPH, is it really only going 64.68? And, is that your speedo or a typical 'busa one?