exhaust ??'s 4-5"& muffler vs SP - Ford Powerstroke Diesel Forum
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Old 10-15-2013, 02:49 AM
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exhaust ??'s 4-5"& muffler vs SP

I got a little debate in another thread of mine so I started a thread on this topic. 4" vs 5" & muffler vs no muffler. pro's& cons?? thanks for any input
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Old 10-15-2013, 05:44 AM
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I think, between the 3, it's gonna be mostly about noise. Little performance gains, in most trucks, are to be had with more than 4".

SP -vs- Muffler falls into this also. I'm sure in theory the SP is better for performance somehow, but You'll never notice it! The Muffler is straight through and offers little resistance to flow. I think the SP is Much more likely to annoy your neighbors in the middle of the night and cause a harmonic "drone" at some level that you'll be unhappy with on the HiWay. I wouldn't do it....

5" looks cooler because it's more massive, louder some, more expensive and harder to fit. Not for me either...

So,,, that's My view anyway
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Old 10-15-2013, 09:33 AM
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Sound without a doubt, and 5" looks cooler. Here's a little comparison I put together.

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Old 10-15-2013, 10:10 AM
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5", straight piped out the side in front of the tire.....I love it! Passengers say it's loud.
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Old 10-15-2013, 11:00 AM
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Quote:
Originally Posted by 03ranger30 View Post
Sound without a doubt, and 5" looks cooler. Here's a little comparison I put together.
I really prefer the 4" Diamond Eye sound. Was that with or without the muffler? What about the MBRP?
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Old 10-15-2013, 11:02 AM
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Both are straight piped, no muffler.


Sent from AutoGuide.com App
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Old 10-15-2013, 02:25 PM
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I got a 4in MBRP. Can't compare the sound to anything other then stock, but the 4in MBRP sounds a lot better.
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