TJ: Jeeps at Dealer having cats replaced under warranty

[screwball]

my question is, upon my Jeep's return, now might be a good time to replace with something better quality than stock.

[Lumpy Grits]

With CA. smog laws... You don't have much of a "cat" choice so, LEAVE IT ALONE.
You'll be happier in the long run....BTDT.
LG

[Tumbleweed13]

I put a Dynamax high flow cat on mine. Didn't notice any difference. Keep what ya got, til they die.

[Zoobi]

In California, cat's are numbered by application. When a smog is done, the inspector is now suppose to look at the number and make sure they fit the application. My cats are weak on mine and I'm out of warranty by time. My options are very limited and expensive.