Recent content by bobby bullet

How much! nicholsbl@gmail.com

Im new so dont flame me. I have a 2001 mp3. My car is stock and cat.Bank1 mil is on. I replaced the first O2 sensor thinking it would fix it but the lite came back on after awhile. I have read about the mil eil. And the none fouler way. Do i need to take the O2 sensor back and buy a header or...