Originally Posted by e60oholic
You should be okay taking them off, I'm not sure how the n52 is but the n54 secondary cats aren't monitored. If you know someone that does your inspections you should be okay (wont throw any codes or monitors), if you go to a rip off place (firestone, goodyear, sears etc) they are going to notice the cut marks and figure out they are missing. Why do you want to delete them? Make it louder? Installing the PE is easy enough to do in your garage or driveway I would just put it on, let it break in then decide if you want it louder. Plus trying to find a shop that will delete them is a challenge.
Unfortunately, I don't have the tools to install it in my garage. The reason of thinking about 2nd cats delete is that I read on here about the cats being too restrictive and hold up couple ponies. I am still not aware of how loud the PE is, since I can only hear it on youtube.