Hollowed out Cat=Lower EGT's? - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 08-21-2011, 08:28 PM Thread Starter
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Hollowed out Cat=Lower EGT's?

I would like to keep the stock look of the exhaust and plan on doing a muffler delete.

I heard people report lower EGT's when the delete pipe is put in. Has anybody done it with punching out the cat and seen lower EGT's also?

Hate to buy a "test pipe" for money when my stock pipe with a hollowed out cat will do the same thing.
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post #2 of 3 Old 08-21-2011, 09:00 PM
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Yes, when you delete the cat and or the muffler, the egt's will drop. The muffler will drop more than the cat.

Last edited by smokersteve; 08-21-2011 at 09:04 PM.
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post #3 of 3 Old 08-21-2011, 09:22 PM
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I would've thought the cat would be a bigger restriction
but yes, improving flow in any way will reduce EGTs

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There u go Tom. John may not be sexy, but he can tutor you, lol.
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