Just got around to installing my R1 throttle tube on my 08 turbo busa. Nice mod for you boys and girls that occasionally like to go WOT.{I like to...lol} Well the 04 R1 tube mod is your friend. Takes about 20-30 minutes, costs around $12 dollars, and is easy to install. If your like me the throttle on the busa unless you move your hand to the top, puts your wrist in an uncomfortable position at WOT. Not a problem for me anymore...It's only about 1/4 in. shorter twist but that makes a big difference.