Samet

Hey guys, Sorry if this has been addressed before but I'm new to the forums. I recently (2 Weeks ago) purchased a 2009 z06, last Monday I had a muffler delete done to the car to give it some tone, until i ordered the cat back. But last night while driving it threw a code P0420, i know its a cat code but would the muffler delete cause that? I have a 2002 Trans Am WS6 as well, back when i first got it i did muffler delete on that as well, and did not throw a code on me. I was just checking maybe someone on here has had the some experience with it, or just my luck that the cat/o2 sensor is bad haha.