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Discussion Starter · #1 ·
Anybody remove their CAT and hammer a pipe through it? Thinking about doing this and removing the stock muffler and replacing it with a Donaldson 51. I would do a CAT delete pipe but I dont want to deal with the engine light coming on.
 

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You wont get a light on a 5.9 only the 6.7
 

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Discussion Starter · #3 ·
I thought there was a censor in the CAT for the ECM?
 

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Skrew- EPA CARB OPEC PETA
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yep my 04.5 is emissionless. go ahead and get a cat delete!
 

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cat delete on 5.9 = no CEL
 

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Discussion Starter · #8 ·
Thanks guys!! I was always under the impression that the CAT's on 04.5 up had some kind of ecm junk on them. Sounds like I gonna get a new delete pipe soon
 
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