I got to lookin under my new p/u and saw that there were quite a few chambers along the way on that exhaust after the two cats. I was going to have a local exhaust shop remove all that stuff from the cat back and install pipe and a flowmaster muffler to the OE tail pipe. I didn't want to spend a pile of money buying a catback system. So how likely am i to invite a CEL by removing all that crap from my gasser's exhaust?