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.
1995 Contour GL
Zetec 5spd
Airbox removed w/ cone filter added. Tinted windows, VentShades.
FUTURE: RIMS!, Power W/L/S, Aiwa CD PLayer, Pioneer Speakers, CTA Intake, Custom Cat-back, SVT BK, WW Touring Spoiler, H&R springs, and graphics by PRO-STYLE Graphics of Orange City.
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