p0243 after maf replaced

[msb3000]

I had to gap them.I got the ngk copper cores the cheaper ones. Bad thing is the misfire came back . Same p0302 and 304 along with the p0300 that was on before changing plugs. Going to have to wait a week or so the do the wires , cap and rotor.Strange that it ran so well for a day. Going to let it sit and put the parts on that I already bought. Timing belt and temp sensor.