A guy like you knows all there is to know about a Busa. So it may be something small and stupid.
TPS checked?
Kickstand pushing sensor all the way in?
T/B's opening smoothly and 100%
airbox hoses all accounted for?
Does it perform any different with the PC disconnected?
I know these are small and dumb questions, but you know we've all been there and done that.
Checked all of the above......... Even made a Motor pass on ECU(No Power Commander)
Maybe Cam Sensor????? Had one Go Before But, Then it set FI Light??? No FI Light now???
Had similar issue as soon as I rolled off the throttle under boost, the bike would shut down... Turned out that my map sensor was seeing vacuum or was it my fuel regulator... ONe of hte two was seeing vacuum, so as soon as you rolled off throttle, the machine would go lean and shut do
Taped the uppipe and ran vacuum directly from up-pipe and cured the issue... You may also want to check your bleeder valves, I had one go bad and it was tuck open all the time, although it ran rich when this happened, if yours is stuck closed, would cause symptoms...
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