Fortunately I live in a state that does not have emission testing and I would like to remove as much of the emission junk as I can. However, I am afraid that I may remove a component that may be critical to keeping the car running properly. I have searched several sites and have not been able to find any help and I would really appreciate it if anyone knows what junk can be removed. A brief description of the pieces location may also be helpful in case I am unfamiliar with the piece. Thank you.