my o2 sensor went bad when i changed the exhaust and intake. does anyone have an idea which one it is??????? i need one bad and dont want to pay $300 for one..... does anyone know where i can get one without forking out an arm and a leg????????????????????

 

How do you know the O2 sensor went bad? Do you have a CEL (check engine light) and did you pull the code to know that?

I'm surprised that an aftermarket intake and exhaust would foul an O2 sensor. I would doubt that caused the problem. Anyhow, you can try: http://www.oxygensensors.com/.