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  #1  
Old 03-28-2008, 11:58 AM
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Cat Questions

I am going to be installing an MBRP 4" Turbo back system in the next couple of weeks. Here in Colorado if the vehicle came with a cat, you must keep the cat installed. They do a visual check prior to any emissions testing. I would really like to "hollow out" the cat prior to installing the new exhaust system. On a previous F150 the cat was the standard ceramic/iridium cat and was therefore fairly fragile. I took a breaker bar, shattered the innards, and dumped it in a trash can. Is the cat on the 04' 6.0's the same type of material?

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Jetmek319
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Old 03-28-2008, 12:02 PM
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Quote:
Originally Posted by Jetmek319 View Post
I am going to be installing an MBRP 4" Turbo back system in the next couple of weeks. Here in Colorado if the vehicle came with a cat, you must keep the cat installed. They do a visual check prior to any emissions testing. I would really like to "hollow out" the cat prior to installing the new exhaust system. On a previous F150 the cat was the standard ceramic/iridium cat and was therefore fairly fragile. I took a breaker bar, shattered the innards, and dumped it in a trash can. Is the cat on the 04' 6.0's the same type of material?

Thanks,
Jetmek319
Yes ......happy hammering!
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Old 03-28-2008, 12:11 PM
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Why bother? 5 more HP?

And you're stupid if you destroy a working cat anyway considering you could sell it (and buy a shell)
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Old 03-28-2008, 12:21 PM
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Thanks for the info TTS !!
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Old 03-28-2008, 12:26 PM
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Originally Posted by Streak View Post
Why bother? 5 more HP?

And you're stupid if you destroy a working cat anyway considering you could sell it (and buy a shell)
With fuel prices you get what you can and the guy said he needs the shell, so why would he take the old cat off, buy a shell and then pay someone to weld it on for him.....the other way is easier
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Old 03-28-2008, 04:04 PM
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Originally Posted by TwinTurboStroker View Post
With fuel prices you get what you can and the guy said he needs the shell, so why would he take the old cat off, buy a shell and then pay someone to weld it on for him.....the other way is easier
Because it's heinous to remove the cat for such a trivial reason.

Cats are worth a significant amount of money (a few hundred) which would take care of cutting the old one off and welding on a shell/dead cat that has been emptied.
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Old 03-28-2008, 05:04 PM
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Quote:
Originally Posted by Streak View Post
Because it's heinous to remove the cat for such a trivial reason.

Cats are worth a significant amount of money (a few hundred) which would take care of cutting the old one off and welding on a shell/dead cat that has been emptied.
"Dead cats", of the emission type, are next to impossible to find in CO. Salvage yards will always answer with, "Sorry we can't sell those" to stay away from liability. Exhaust shops will run you out the door for fear of the Emission Big Brother. I would have to go out of state to try to find a shell that was worth anything and that would be more time consuming and expensive than shelling mine.
Butt, Streak, I will sell you mine for a bargain basement price of $300 if you'll shell yours and sell it back to me for $20. I was really looking for advice and information in order to make plan of action, and not opinions and offhand insults.
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Old 03-28-2008, 07:01 PM
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farmboys diesel has cat delete pipe in 4''. Take your cat to a muffler shop and have the put flanges on your 4" pipe and enlarge the cat pipe and add flanges. thewhen u want u can cange out the cat for the strait pipe.
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Old 03-28-2008, 07:07 PM
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take a blow torch if you have one and put the end of it in the cat and let it red hot then drop it in cold cold water that will make it alot easier to shell.
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Old 03-29-2008, 05:59 PM
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Thanks Chaps,
Both excellent ideas!
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