How many of you run high flow catalytic converters? I am thinking about taking off my stock CAT and replacing it with a high flow soon.

Was just wondering if those who have one installed have any problems with the check engine light coming on? I have heard that a hi flow CAN throw a check engine light and then have trouble passing inspection.

Any feedback on this?

Also what style/brand would be good for my 98 xj... need it to have a bunghole for an o2 sensor on the CAT.

Thanks guys,

CW

I am running a custom 2.5" downpipe , 2.5" hi flow cat and 2.5" catback

My 97 came from the PO with no cat installed . I put a high flow from www.performance-curve.com in it and it works just fine.

Sweet guys ... which cats are you running tho... Brands... which specific one from performance curve may I ask man? Sorry... just trying to pick out my exact one...

I'm curious about this too. I would like to go with a magnaflow spun cat 2.25 inlet and outlet. They make one with an o2 bung. I'm not sure what is truly considered a "hi-flow" cat though.

When I was having a pipe welded up for my header the guy at the exhaust place I was at said the cherokee's came with a hi-flow cat from the factory

Mine is the thundertech spun ceramic from performance curve it ran me 40.00

Probably because he didn't feel like replacing your cat? lol

I plan on putting a Magnaflow replacement cat on there, with an aftermarket muffler.

Magnaflow makes a good high flow cat for relatively cheap.

Okay guys, thanks for all your help as usual! I plan on getting a hi flow at some point.

Which is dumb cause I had cash to pay him for it right then.

My '97 came without a cat from PO too....

guess someday I'll get around to having one put on...

id need a sensor also and those are a little pricy right?