I took my car into the dealership to get an inspection a few day's ago. They told me it won't pass because the 2 rear 02 sensors were knocked out, so they said I would need a new PCM. So they changed the PCM, and it still wouldn't pass, so they said they would need to put the factory CAI back on. They were going to charge me 189.00 to change it, so I told them I would do it myself, which I did. Now what I want to know, is why won't my car start?? It will turn over but won't start up. And the dealership is saying it's my fault, so they want to charge me to check the PCM again. Anything I can do?? Or any ideas on what might be wrong?? Thanks.