Well installed my CAI and car ran great! we put my sub and amp in at the shop the next day, came home and i started adjusting amp/sub. I feel what i thought was a miss at idle. turned down stereo and all of a sudden check engine light comes on and starts missing bad at idle. turn car off, let it sit and i take off the CAI and reinstall it from scratch. Engine light goes off and miss is gone. now i hear what sounds like an exhaust leak coming from under hood. My 1st thought was converter cloged. but would that throw engine light? and if so why did it quit.