Quote:
Originally Posted by steve99
No you wont get a CEL from a Catback unless you have other issues like an exhaust leak near o2 sensors or sensor problem
CEL code for CAT efficiency is P0420
I bet money your cel is due to your intake throwing off fuel trims/or AFR causing rich/lean CEL codes.
next time it come up read the code.
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Sir, you CAN get a CEL running this header + catback. Like I said, I have gotten it 3 times over a period of 6 months... don't mind the other codes, they are related to my remote starter that I am testing right now. I wouldn't be surprised if just variations in ambient temperature and mositure % can make the CEL show up...
