Off-road exhaust = NO check engine Light?? - MustangWorks.com : Ford Forums

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Off-road exhaust = NO check engine Light??

06-25-2003, 01:17 AM

afeezor97

GRNSNAK

Join Date: Jun 2002

Location: Slidell Louisiana

Posts: 65

Quote:

that is because on the 94-95 models the o2 sensors are before the cats and read the same.

I have a '97 GT. Its had two o2's behind the pre-cats, and two o2's behind the last set of cats. There where 6 cats total.

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