Well I'm checking my car over tryin to get the car ready to run this Sunday and i think my biscuit inside my cat converter is toast at 178k and it has a annoying rattling inside it..so my ? Is if I just delete my cat and put a pipe in it's place and that's all that the car has done will that take me out of ES? And will I have a cel? I did not see a downstream o2 after the car so I would not think so about the cel