i moved to ca from ohio in '97 and not once had to go through an emissions inspection on any of my bikes. so think we're okay, at least for now. however, you never know with ca. i would not be surprised though if in the future they do start smog checking bikes (they'll probably say it's for the environment, but we all know it would just be for additional revenue from like fines, etc.) when i got my x-pipe installed, i forgot to ask to keep the cat converter that they removed in case i would ever need to re-install it for any future checks. i contacted the dealership about getting that part that they removed but haven't heard back yet. a little upset that they didn't ask or remind me if i wanted to keep the old part (kind of like if you purchased new handlebars and got them installed... - wouldn't they give you you're old ones back after installing the new ones?)