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nmdriver 02-24-2012 06:01 PM

Not another performance question!
I searched and read quite a few performance threads and it seems like the overall opinion is that chipping/programming, exhaust and intake are not worth the $ put in when it comes to power put out.

My question is that - My JK has 144k miles on it and the other day I got a check engine light that equated to a cat restriction code.

I want to remove the cats (I believe there is two) and straight pipe that part out. Is it worth also replacing the muffler or is the gain marginal? I would anticipate some power being given back from the cat but do not know if I should do the muffler as well.


daggo66 02-24-2012 09:40 PM

You do realize that it's illegal to run without cats.

nmdriver 02-24-2012 10:33 PM

Not where I live.

nmdriver 02-25-2012 10:03 AM

I imagine as long as I reinstall the 02 sensors I should get a little power and not have any check engine lights.

JIMBOX 02-25-2012 10:06 AM

:whistling: Interesting--you put 144K miles onit and NOW you're worried about power ????


ESP 02-25-2012 10:09 AM

144K on a JK? You have a TJ in your avatar.

Regardless...x2 on what Jimbo said.

4Jeepn 02-25-2012 10:18 AM


Originally Posted by nmdriver (Post 2071912)
Not where I live.

if you live in the usa its illegal.. its called federal law. Thread closed....

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