Are headers worth it over just going catless + catback

[K4fxd]

Boosted and rotten egg smell = cats going bad. If you daily I would look at going with high quality cats, like GT500, Ferrari, Lambo or ???. If not a daily, remove them and live with the smell. Seems like the design pulls a vacuum and exhaust gets pulled into the cabin, most noticeable when at WOT. I extended my exhaust tips and it helped but I still get a cabin full of cat stink when I go WOT. No cats and this will be hydrocarbon smell. Might stink in the car even when not at WOT. Have not tested this so I don't really know.

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[Bob Lob Law]

I don't get any noticeable smell in the car at all with the windows up without cats. I do smell it outside or if I have the windows down when stopped and no wind.