Some new CA regulations you may have heard rumors about go into effect Jan 1, 2011.
I've got nothing against cops, they don't make these laws. Hell, I'm pretty good friends with several LEO and they are outstanding people. None of them are CHP though, so I can make fun of the chippers.
Check the CHP's own link to this. Welcome to nannyland.
Another one. Looks like you better build your own exhaust so there is no manufacturer's stamp...