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Old 02-24-2012, 06:01 PM   #1
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Question 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.

thanks

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Old 02-24-2012, 09:40 PM   #2
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You do realize that it's illegal to run without cats.

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Old 02-24-2012, 10:33 PM   #3
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Not where I live.
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Old 02-25-2012, 10:03 AM   #4
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I imagine as long as I reinstall the 02 sensors I should get a little power and not have any check engine lights.
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Old 02-25-2012, 10:06 AM   #5
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Interesting--you put 144K miles onit and NOW you're worried about power ????

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Old 02-25-2012, 10:09 AM   #6
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144K on a JK? You have a TJ in your avatar.

Regardless...x2 on what Jimbo said.
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Old 02-25-2012, 10:18 AM   #7
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Quote:
Originally Posted by nmdriver View Post
Not where I live.
if you live in the usa its illegal.. its called federal law. Thread closed....

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cat , catalytic , exhaust , muffler , performance

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