P300 Misfire White Smoke From Exhaust
 

So i was coming down the eway and about 30 minutes of driving traffic got slow. So when i finally tried to redline my Car today for the usual Daily Redline near the exit like 30 miles of driving just when it was going to the redline it stopped at 6700 rmp and misffired a few times. It never did that before and white smoke was coming out the exaust since i dont have a cat. I mergent into the emergency lane after seeing the continued misfire. The white smoke stopped as soon as the misfire stopped and it drove perfect ad usual. I redlined it on when reentering the eway again to see if it happened again and nope. Everything was finr, no white smoke and no misfire. Got home snd code was a misfire from fuel cut of for some reason. Everything Else checked fine besides the no cat code. Anyone have any clues and if that is bad. Like i mentioned im not getting any white smoke and no further White smoke. Only time i seen white smoke before was when i seen some newspapers stuck on my engine a few weeks before.