Despite what you may have read, I have a PCI unit on my '98 XR600, and it does work-in other words, it is a stupid amount of power to have in the woods! But now I have to pass an emissions test to register in another state, and the jetting is not getting it. Anybody know if he (Ron) is still around? I thought that maybe the database for tuning has increased, and I can make the proper adjustments to pass inspection. Anyone....anyone?