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Mustang Forums
2011-2014 Mustangs
Exhaust
Switching to an O/R X-pipe
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<blockquote data-quote="Gruca" data-source="post: 15771345" data-attributes="member: 153163"><p>I believe only the front O2 sensors would affect that. I'm fairly certain the rear O2s are just for the cat efficiency. I could be wrong, but that was the impression I was under.</p></blockquote><p></p>
[QUOTE="Gruca, post: 15771345, member: 153163"] I believe only the front O2 sensors would affect that. I'm fairly certain the rear O2s are just for the cat efficiency. I could be wrong, but that was the impression I was under. [/QUOTE]
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2011-2014 Mustangs
Exhaust
Switching to an O/R X-pipe
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