Hi all! Well after checking and finding the car had fuel pressure I relented and took the car to a shop. I told them all I had done. The called me back and said they were 100% certain my problem was blocked Cats. They they could be replaced for $600 dollars before tax. I asked a mechanic friend in another state and he said the symptoms could lead to that. I told the shop manager ok. He later called me and told me the muffler got damaged and it was up to me as to whether I wanted to drive it with no muffler which wasn't really loud or he could order me a after market replacement. After hearing the car and being told by the shop owner that it was legal. I decided to take the car and decide on a muffler later. It actually doesn't sound abnormally loud at all. I was wondering if this is ok to drive or should I have a muffler or pipe coming back. Also is it possible that blocked cats and muffler could do this? I checked the shop on Yelp and they had all good reviews. He told me he had to core the cats so I didn't get them back. Thoughts?