I have a 2009 Mini Coop Hardtop that has given a misfire code. Not knowing which coil pack it was and the vehicle has 80K miles, I replaced all four and the spar plugs. Since these have been replaced the vehicle still sputters as if its sipping and still showing the same misfire code. I had this code cleared out and immediately it showed back up. Am I the only one having this problem? What can I doe to remedy this? Any help is appreciated!!!