Originally posted by contour1995:
I have a question! 
Now, I live in Florida. Are O2 sensors on all the Zetecs???? Are they absolutely necessary? I am kinda new to the whole performance aspect. So, any easy to read info would be great.Yes, all Zetecs have them
Yes, they are necessary
Most modern engines use O2 sensors to regulate the amount of fuel the engine computer is sending the engine.
