So after reading a bunch of forums and watching a lot of videos, I decided that a straight pipe from the second cat back would be a good choice so that my car could breathe more and it hopefully wouldn’t cause back pressure problems, for about a day everything was fine and now at red lights my car has a really rough idle like it’s about to stall, and I’ve seen the other forums about these same codes and I’m wondering if it’s just a coincidence that these problems are coming up after I straight piped it