ok wellthe other thing is it did go off for a tad after a while of relaxed driving but came back after i did go wot. the other thing is the car idols perfectly fine other than the rattle i have from the supercharger coupler i need to replace so i wouldn't think it would be a big leak iv checked the coil and it does give off a spark but i have to check the plug on it. also just have to check myself on this but am am i right on the middle cylinder on the front of the engine being cylinder 3? thats the one thats saying is misfiring and i also have a friend who swares that the upstream O2 sensor is whats causing both error codes...
