The Busa does have a magnetic pick-up on the drive sprocket after some searching.

It seems that there acuracy is bad, up to 20%.

They sell speedo correction do-dads to correct this problem.

"Speed-o-Healer" and "Yellow Box" are 2 i found

You can change the corection factor any amount you want.

50 can equal 200 if ya want.

case closed?

Last edited by burtard; 12/31/2009 2:02 PM.