03 6.0 Cats removal - Ford Powerstroke Diesel Forum
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post #1 of 10 Old 05-18-2011, 12:46 PM Thread Starter
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03 6.0 Cats removal

I just bought a 03 6.0 F-350 a couple weeks ago. Haven't done anything but tinted it. I'm thinking about taking the cats off and leaving stock muffler. I heard that will make the turbo whistle better. Any suggestions or comments?
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post #2 of 10 Old 05-18-2011, 01:00 PM
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4 or 5 inch straight pipe or stay on the porch.
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post #3 of 10 Old 05-18-2011, 01:14 PM
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just deleting the Cat does not make much diff at all in sound. Now a straight pipe.....

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post #4 of 10 Old 05-18-2011, 02:33 PM
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Yeah. With the muffler still on you won't notice a difference really. Take the muff off and leave the cat and you get a little rumble and no whistle. Take cat and muff off and you got urself a jet fighter with a good rumble. Oh and you got the ridiculously loud turbo.

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post #5 of 10 Old 05-18-2011, 05:36 PM
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I took my cat off and left the muffler and it actually got quieter but the turbo did whistle a little louder . I am going for the 5" next
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post #6 of 10 Old 05-18-2011, 05:39 PM
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i have a 03 6.0 and if u like the jet whistle sound deff ditch the cat and the muffler it sounds awesome
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post #7 of 10 Old 05-18-2011, 10:54 PM
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^^^^^

I second that!

Love my 03 with stock piping with muff and cat delete pipes.

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post #8 of 10 Old 05-19-2011, 01:17 PM Thread Starter
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Ok guys I dropped the muffler and left the cat. Whistles better and rumbles little better. So if i drop the cat now its gonna scream? I heard it's a huge fine in SC if you get caught without the cat. Whats my chances of getting caught??? Insight please!
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post #9 of 10 Old 05-19-2011, 02:29 PM
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so just take the cat off knock the guts out of it and bolt it back up thats what i did to mine free cat delete in my opinion and has stock apperance
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post #10 of 10 Old 05-19-2011, 03:33 PM
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Turbo backs without mufflers or a cat are cheap. Make the move!

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