hey guys I've been chaseing this misfire problum for 2 mounths now. I first had the codes pulled and got a 605 so bought a used pcm had it flashed then had to put a chip in it to turn pats off now its starting to do the same thing the old ecu did it misfires at idle I can feel it shake and you can see it shake.The car feels strong accross the board and has no hesitation on throttle if this ecu is bad what colud be killing them