I have a yosh exhuast and thought i would try this mod out. Performed this mod last night only took 12 mins. One thing you want to do to pull the #30 wire out is to remove the grey colored keeper on the back of the plug (this is the plate that has the #'s marked on it). just use a baby screw driver to pry it back. (you will see a notch to do this). If you do this you can pull the wire out with your fingers. Test road it today and it is alot smother in the lower speeds. It does make the big have a deeper sound and that pesky F1 light is finally gone.
Thank you very much for posting this mode. My GSX-R has never run better.