All of what you're saying makes perfect sense. I decided to put in those parts because I could afford them plus the car benefits a little. I'm go ahead and try what you've suggested. I continued my search and some one at another forum told me that I could also have a back pressure issue since the car had a misfire for quite a while. It makes perfect sense, the catalytic could be clogged and full of crap. I'm also going to straight pipe the car. I was going to do it anyways. Thank your for your help.
