I have a '00 426 and had that annoying hesitation when I would try and whck the throttle open suddenly. Installing the P-38 plate(which does what the Ferry mod is meant to do), using C
-12 fuel and careful jetting solved ALL my problems. I'm using the White Brothers
"E" series carbon fiber silencer with the titanium hi-boy head pipe. This combination gave an incredible boost right off idle which is what I wanted. As summer has arrived, I'm at a #158 main jet with everything else stock. During the winter, below 50 degrees F, I used a #160 main jet. It's pretty amazing when you get the correct jetting. It's like the engine gets a new life. Cold air is dense so to compensate, slightly richer jetting is needed. The opposite is true for wamr/hot air. One thing that has become apparent is that there seems to be a difference with each and every 426. Your bike could be set up identically to mine and yours might run better on slightly different jetting. If you are willing to try different jetting, the rewards can be significant. Hope this helps.
[This message has been edited by Boit (edited 07-03-2001).]