Catted Y pipe
03-02-2009, 12:29 AM
#1
Staging Lane
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Catted Y pipe This maybe a dumb question but If I get a catted y pipe for my long tubes and hook up the rear o2s behind the cats will the check engine light still come on? or are the highflow cats obdll legal?
03-02-2009, 07:10 AM
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I may be wrong, but I don't think there is any catted y pipe that has o2 sensor bungs behind the cats. You will either have to get o2 simulators or have them tuned out. Many people on here will tell you to go with the tune because sometimes the o2 simulators will still cause you to throw a code.
03-02-2009, 08:30 AM
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It's possible to still throw codes with the rear 02s plugged in behind high flow cats, so the best thing is to tune them out.
Last edited by ramairJP; 03-03-2009 at 06:00 AM.
03-02-2009, 10:14 PM
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I may be wrong, but I don't think there is any catted y pipe that has o2 sensor bungs behind the cats. You will either have to get o2 simulators or have them tuned out. Many people on here will tell you to go with the tune because sometimes the o2 simulators will still cause you to throw a code.
