So I went out of town for about 8 days and when I got back my battery was completely dead, long story short we eventually got into the car. When I finally got to start the car up it was idling rough right off the bat, sounded like it was misfiring at idle. I went to drive the car and when I would give it WOT it was completely breaking up (stuttering, cutting power, misfiring, etc.). After about maybe 30 minutes of running we went to drive the car again and it was totally fine, not misfiring, breaking up, or idling weird. Its been like a day since this happened and the car is totally fine still. I was thinking maybe it was just because of how dead the battery was, maybe it wasn't at the right voltage and that may have been what have caused it. Also I have the 2JR cowl intake and I was thinking possibly water got into the intake which caused it go get into the fuel? The car only has 26000 miles so I was thinking it wouldnt be spark plugs. If anyone has some insight I would appreciate it greatly.