MBRP 4" straight pipe - Ford Powerstroke Diesel Forum
6.0L Performance Parts Discussion What has or has not worked for you?

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Old 08-28-2013, 07:53 AM
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MBRP 4" straight pipe

I just bought a 4" turbo back MBRP, installing it this weekend. Looks pretty simple from what I've read. Anybody know what extra horsepower that will give me? I've heard upwards of 20-30... also I've read that by deleting the CAT it will throw a code. Any word?

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Old 08-28-2013, 08:15 AM
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I pulled the cat and muffler out of my 04 Ex with no issues or codes.


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Old 08-28-2013, 08:17 AM
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removing the cat will not throw any codes. and not that much hp. just a few.
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Old 08-28-2013, 08:26 AM
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Alrighty, thanks!!!
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Old 08-28-2013, 10:38 AM
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If you bought the exhaust thinking you'd get 20-30 hp out of it prepare to be disappointed. You do an exhaust for the sound and to reduce back pressure. You aren't going to be able to tell any performance difference.

That said the sound of a straight piped 6.0 makes it all worth while.
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Old 08-28-2013, 12:47 PM
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I think when i straight piped mine i noticed a boot of speed on building low boost numbers but not close to being crazy noticeable, just my 0-10 psi built little quicker on the flip side though...

the sound your going to really like and your gonna kill your mpg for first few months like i did just loving the sound haha
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