So this may be a stupid question but i was thinking probably too much thinking, im working on eliminating my cats and smog on my car by removing the cats and the smog on my car am i going to throw any check engine lights or anything of that nature that will cause it to run differently? i still plan on having the O2 sensors near the headers on the new h pipe unless they are not needed... i searched the threads but there is a billion of O2 threads