4" to 5" - Ford Powerstroke Diesel Forum
6.7 Performance Parts Discussion 6.7 Performance Parts Discussion

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Old 11-04-2013, 05:18 PM
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4" to 5"

I'm thinking about going from a 4" to a 5". I was wondering whats the positives and negatives about this switch. And also am curious of how much I could get for my used less than a year old 4". I appreciate the help!
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Old 11-04-2013, 05:27 PM
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I'm assuming your talking about exhaust. There really isn't a huge benefit going to 5 inch over 4. It might be a little louder. I went with 4 when I got mine and wish I had gone 5 just for shear volume, plus it just plain looks cooler!

As far as worth, not sure what to tell ya there, might want to search the interweb and see if you can get an idea on used exhaust price.
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Old 11-04-2013, 05:36 PM
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Positive - sounds cooler
Negative- cost money and only thing it does is change the sound.

if you are looking for performance, you wont get anymore with a 5in exhaust.
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Old 11-04-2013, 05:39 PM
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Yea I figured it would have a deeper tone to it. I wasn't sure if it would help with EGT's or anything like that.


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Old 11-05-2013, 12:06 AM
mcd mcd is offline
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What is the difference in sound between 4" and 5" exhaust? Is it a different tone, or is one just louder than the other? What about if a muffler is added to both sizes, how does that effect their sound (dont say it gets quieter!)?
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Old 11-05-2013, 10:36 AM
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Its louder! Especially with a 8" tip.

Glad I went with a 5".
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