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Obzen · 08-21-2012, 09:18 PM

Keep in mind though. The car itself is doing the "sniffing". If the rear o2 shows the cat isn't working then they will fail you. The thing we do not know yet is how this new smog will work with cars that have things like that turned off in the tune.

08-21-2012, 09:18 PM	#5
Obzen Pull up Cougar! Drives: 2016 2SS Join Date: Jul 2011 Location: San Diego Posts: 2,875	Keep in mind though. The car itself is doing the "sniffing". If the rear o2 shows the cat isn't working then they will fail you. The thing we do not know yet is how this new smog will work with cars that have things like that turned off in the tune.