I have been fighting a misfire in cylinder 1 for sometime, i have replaced spark plugs,cables,coil pack. I have also done the seafoam just for kicks. The car drives fine up until i open full throttle. I havent done any of the cylinder leakage test,compression in a while. Last time i did everything came out just fine(about a year ). Ive also done injector cleaning, and made sure all spark plugs were gapped accordingly. Any one seen this or have any suggestions...any help would be greatly appreciated.