hi im new to this site and i have tried looking for this in the forums but cant find it i just bought a 280z that was origanilly a cali car so it has the stupid emmisions stuff on it and i live in michigan now i have been told that the reason for my back fireing and missfireing is because of this is there anyway i can get rid of this or anything i can do to fix it i have the timing dead on new plugs,wires cap and rotor so i just cant figure this out any help is greatly appreciated.