So I've got an issue that hopefully someone here can answer for me. Have an 02 sunfire with the 2.2 OHV and I have a header on order cuz my stock manifold is leaking. From the pictures it doesnt have a rear O2 sensor. My question is whats the best way to delete the CEL that comes from that sensor? Is there like an eliminator plug I can get from somewhere? Or a way to cheaply tune it out?

HP Tuners can remove it, but your looking at about 100$ for credits.

Yeah judging by the cost of those tuners I wont be getting one. Will it cause an issue if I just leave the rear O2 out? I understand it'll mean my CEL stays on but if it's not going to adversely effect how the car runs I dont care. Just need to know what to expect.

Just a header won't have anything to do with the rear O2 sensor. Only the front and it should have a bung for that. The rear O2 is about half way down the car, your header wont reach that far.

Yeah I see your right. Looked under the car today and saw that and the huuuuuge hole in my flex pipe. Thanks everyone.