4" MBRP Muffler vs No Muffler When Towing - Ford Powerstroke Diesel Forum
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Old 04-18-2014, 07:10 PM
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4" MBRP Muffler vs No Muffler When Towing

Doing a turbo back exhaust and can't decide which way to go. I like a good loud sound like anyone else, but when towing it can get a little obnoxious.

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Old 04-18-2014, 08:26 PM
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My vote...no muffler!
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Old 04-19-2014, 06:10 AM
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No benefit to a straight pipe other than the increase noise, but with that noise you run the risk of DRONE at hiway speeds. You could well find yourself really resenting the hours of towing with it....

Do yourself and your neighbors a favor, get the muffler
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Old 04-19-2014, 06:11 AM
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Muffler or resonator. I run (2) 30" FTE resonators and love it.
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Old 04-19-2014, 04:29 PM
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+1 for the FTE 30" resonator. I use mine when I tow and couldn't be happier. Sounds good and no more drone.

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Old 06-18-2014, 09:27 AM
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I use the 30" FTE plus the striaght through muffler (walker BTM style) on my 4" and it is really nice. I had drone without the resonator. I tow a lot and the drone was too much. I will consider a straight pipe with only a 30" FTE if the current setup rusts out.
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Old 06-19-2014, 07:18 PM
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Quote:
Originally Posted by NoRalPh View Post
No benefit to a straight pipe other than the increase noise, but with that noise you run the risk of DRONE at hiway speeds. You could well find yourself really resenting the hours of towing with it....

Do yourself and your neighbors a favor, get the muffler
lower egt's , lets the engine breath , if your gonna put a turbo back on it then straight pipe it while your at it , if not might as well leave the intake and stock dp on it
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Old 06-20-2014, 05:16 AM
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Quote:
Originally Posted by 897.3alltheway! View Post
lower egt's , lets the engine breath , if your gonna put a turbo back on it then straight pipe it while your at it , if not might as well leave the intake and stock dp on it
Understand though, when we're talking about an MBRP "muffler" it has no restriction....

No baffles, no change in direction, but rather what used to be called a "Glass Pack" (Cherrybomb) that is larger than the pipe ID with small perforations that change the noise not the flow.
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Old 06-20-2014, 07:50 AM
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You do not loose anything over a open exhaust using a muffler except noise.
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Old 08-29-2014, 12:29 PM
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I went straight pipe for about a year. The sound was awesome and annoying. So I bought a Donaldson muffler and couldn't be happier. No more drone and I'll still get some sound when cranking on it.
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