I let it rest for two hours and deleted the codes. Started right up with no CEL and idled at about 700 rpm. In drive it idled at about 525. Drove about 1/4 mile then showered down a little on the gas and the CEL came back on and the engine ran rough. Checked codes again and they were the same as before P0304 & P0305. If I have time tomorrow I'll swap the coils for two cylinders that are not misfiring and see if the problem travels to two different cylinders. I don't think the MAF is the culprit. Think I'll order a new MAF just the same cause when they go bad it's catastrophic and the car doesn't go anywhere. Already had that happen on my other Xfire. Has been starting up just fine every time.