CAT On or Off? - Ford Powerstroke Diesel Forum
6.0L Performance Parts Discussion What has or has not worked for you?

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post #1 of 15 Old 07-14-2013, 03:19 PM Thread Starter
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CAT On or Off?

When I installed my turbo-back exhaust last year, I had a left over CAT. Rather than recycle it, today I welded a 4" SS pipe to it. Now the question is, "do I put it back on, or not?"




Frank
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post #2 of 15 Old 07-14-2013, 03:47 PM
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HELL NO. HELL NO!!!!!!
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post #3 of 15 Old 07-14-2013, 03:53 PM
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Why would you waste the money and time welding pipe to it? Its a restriction. Throw it out!

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Colin S. Age:22 Certified Diesel Tech, Infantry US ARMY
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post #4 of 15 Old 07-14-2013, 06:13 PM
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other than a few degrees in the egt's, I have seen no difference without the cat ?

04 F-250 CCSB 4X4 6.0L Auto, tweaked by GEARHEAD

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post #5 of 15 Old 07-14-2013, 06:21 PM
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Quote:
Originally Posted by shawnb99 View Post
other than a few degrees in the egt's, I have seen no difference without the cat ?
What's you EBP before and after?

As they said, why would you start restricting your exhaust?



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post #6 of 15 Old 07-14-2013, 06:24 PM
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Mine is about to come off


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post #7 of 15 Old 07-14-2013, 07:11 PM
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there is not performance benefit to having it on even if your not after tons of power its better to just leave it off.

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post #8 of 15 Old 07-14-2013, 07:59 PM
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I agree, leave it off. If you are somewhere that does emission testing you can swap it in and out when you go test but otherwise I'd leave it out.
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post #9 of 15 Old 07-14-2013, 09:40 PM
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Leave it out. Our trucks sound wayyy too good without one to even waste the time thinking about reinstalling that

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post #10 of 15 Old 07-14-2013, 09:51 PM
Making ported intakes

 
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I'm actually gonna install mine just to see if it makes any difference

Oliver
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