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Topic Review (Newest First)
02-14-2013 09:54 PM
homebrwd There are three on a 4.0 the third one has no O2 sensors behind and therefore not measured by the computer. Removal of it will pass any standard emissions test that uses the OB2 port. Most states won't test for the third cat because it's not required for their emissions. Plus lets be real most of the mods people make to their Jeeps won't pass all state laws, especially lifting them.
02-14-2013 06:02 PM
eagle223 You probably won't get too many responses seeing as how it is required by law in most states to have a catalytic converter.
02-14-2013 05:21 PM
homebrwd No one with an aftermarket muffler and no cat?
02-14-2013 11:28 AM
Slightly different exhaust thread

I am looking to get rid of the crappy glass pack I am currently running. What makes this thread a little different is I am looking for vids and recommendations from people who don't have the third catalytic converter anymore. Not having that changes the sound and most of what I have seen is people keeping the cat and running a catback system or just swapping out the muffler. Does anyone have recommendations for a system without that third cat? I am looking for something kind of compact to fit with my tummy tuck (hence why I currently have a glass pack). If ovular keep the height around 4inches and the width around 7-9in and the length around 14in.

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