Well I replaced the #6 COP and drove it to Advanced Auto and NO CODES!! I will still get a complete tune-up in a few weeks when I have more time, but for now I hope this solves the misfire. Would you guys recommend changing all of the COP's when the plugs are changed? Also, has anyone got some feedback on the Granatelli COP connector kit with the solid wire instead of the springs? I'm thinking of adding these when I do the tune-up if they are worth it.