Ford Mustang Forum - View Single Post - Tune that deletes rear o2's?
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post #2 of (permalink) Old 01-17-2016
SHELBY GT 350 Member
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JBert's Avatar
Joined: Jan 2011
Location: Central Massachusetts
Posts: 9,399
As I understand it, you cannot pass the "plug in" inspection with the O2's turned off; because the inspection checks to make sure that nothing is turned off and everything is working correctly / no error codes. You have to go the defouler route, or some other way to make the O2's show "ready" and giving correct signal.

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