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Old 05-17-2011, 07:49 AM
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Question Eliminating mini-cats on 2004 4.0

I would like to see if I can elminate the mini-catalytic converers on my 2004 Rocky Mountain Edition WJ. Has anybody does this and if so - can you still pass emissions with the single converter. I am thinking about installing a Magnaflow unit if I can figure out how to eliminate the mini-cats.

Thanks for any insights that you can provide.

Chris
"Towerman" - Lynchburg, VA
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Old 05-17-2011, 01:41 PM
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Re: Eliminating mini-cats on 2004 4.0

I would also like to know how to do this, get this guy some info
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Old 05-17-2011, 01:59 PM
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Re: Eliminating mini-cats on 2004 4.0

Nobody else has replied yet...but your tagline is great! The Liberty is the transsexual of the Jeep world! I agree! The only thing worse would to be caught drivng a Kia...or maybe a Subaru!
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Old 05-17-2011, 04:25 PM
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Re: Eliminating mini-cats on 2004 4.0

Thanks haha, it appears though that we may have to just find out ourselves about these mini-cats though.
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Old 05-18-2011, 12:06 AM
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Re: Eliminating mini-cats on 2004 4.0

Well if you remove them you'll get a Check engine light (probably p0420) for the cats being toast. My solution for you for that is a spark plug non fouler as seen here, $5 and it'll save you a lot of headache + keep you "emissions legal" as most places scan the OBD2 port when they check your vehicle over.

http://www.civicforums.com/forums/22...on-w-pics.html
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Old 05-18-2011, 09:20 AM
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Re: Eliminating mini-cats on 2004 4.0

DHILLON09 - thanks for the great idea. Looks like something that I can pull off myself. Appreciate the tip and the link!
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Old 05-18-2011, 09:55 PM
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Re: Eliminating mini-cats on 2004 4.0

Quote:
Originally Posted by Towerman View Post
DHILLON09 - thanks for the great idea. Looks like something that I can pull off myself. Appreciate the tip and the link!
No problem! I want to do the same when I get some extra money !
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Old 05-29-2011, 10:53 AM
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Re: Eliminating mini-cats on 2004 4.0

done this on my 4.7 01 just cut them off an welded in the new pipe. i didnt have to use the method above to eliminate the check engine light. it came on for about a month and went off. never came on again an this has been close to a year now.
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