My friend and I have those on our JKs. They sure seem to feel better but they at least work well. No codes etc.
make sure you order and use the recommended plugs. I changed mine at 130k, couldn’t believe the engine still ran!
I’ve Always changed exhaust on everything I own, Exhaust was the first mod on the wife’s JKU with about 60 miles on it (40 was to and from the 4 wheel parts store). When we got her JT, exhaust was on her list of firsts. My JKR has the T304 stainless rock crawler, yep it’s loud. She wants a duel...
Not really a Glam shot But, my wife just closed on her slightly used Loaded Launch Edition. We had her JKU’s shoes installed since the 35” BFGs were brand new She loves it!