Straight piped vs. muffler sound
Thread Starter
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Senior User
Joined: Feb 2006
Posts: 178
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From: Maryland
Straight piped vs. muffler sound
I have the bully dog 4" turbo back system on my e99 and I am impressed with the sound but would like it louder. It has one of those mufflers but you can see straight through. Do those straight through mufflers really muffle the sound of the exhaust any. I mean, since you can see straight through (there are little baffles or holes on sides on the inside of the muffler) but would a straight piece of pipe make any difference of sound or is that muffler just as loud?
Post Fiend
Joined: Feb 2007
Posts: 14,541
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From: Dallas-Ft. Worth
Have you had someone stomp on your truck going past as you listen? I have an MBRP straight-through muffler, and it's plenty loud! I think straight piping just changes the tone some, not sure about making it louder. But it might drone on you without the muffler. Something to keep in mind.
Because racetruck
Joined: Apr 2007
Posts: 2,786
Likes: 104
From: Monterey Bay, CA
If you want louder than the best option is stacks
http://www.riffraffdiesel.com/mm5/me...SC-STCK-STACKS
http://www.riffraffdiesel.com/mm5/me...SC-STCK-STACKS
Hotshot
Joined: Dec 2006
Posts: 14,069
Likes: 17
From: Melbourne, Ky
I have the bully dog 4" turbo back system on my e99 and I am impressed with the sound but would like it louder. It has one of those mufflers but you can see straight through. Do those straight through mufflers really muffle the sound of the exhaust any. I mean, since you can see straight through (there are little baffles or holes on sides on the inside of the muffler) but would a straight piece of pipe make any difference of sound or is that muffler just as loud?
But with a huge power loss!
Thread Starter
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Senior User
Joined: Feb 2006
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From: Maryland
Stacks, yea, thats always an idea. But I wanna be able to hear when I get out. Plus I have a box in the bed, and the 4-wheeler fits good behind it. If i were to put stacks in, then I'd have to leave the tailgate down and that just doesn't enthuse me. But a good idea tho. And Izzy, ive actually never had someone drive my truck past me. Maybe i'll try that. Maybe because of the crew cab long bed is why i can't hear it as much. 
Fleet Mechanic
Joined: Nov 2008
Posts: 1,573
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From: Seattle
Anyone need coolant test strips?
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Last edited by binuya; Sep 18, 2009 at 05:03 PM. Reason: wrong post
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Hotshot
Joined: Feb 2007
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From: Sterling Heights,Mi
I have done the muffler, and have done the straight pipe, I have kept the straight pipe, I Love the sound as comared to the muffler. I will say though, I had the 3.5 aero turbine muffler, and would do the 4" aeroturbine muffler.
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Post Fiend
Joined: Feb 2008
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From: Lancaster, Pa.
Elder User
Joined: Oct 2006
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From: New York
The Muffler makes quite a bit of differance. I did the Straight pipe, and then the MBRP 4" muffler. I personally loved the straight pipe sound better, but my neighbors I think like the muffler. If you only care about cool sound quality- Straight pipe. 
Senior User
Joined: Mar 2004
Posts: 183
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From: La Vernia, Texas
I have a 5" straight pipe that dumps out just in front of the passenger rear wheel ( got tired of cleaning black smoke residue off of my racecar and white travel trailer) and it is plenty loud. I have had no issues in Texas or Virginia with inspections
Post Fiend
Joined: Feb 2007
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From: Dallas-Ft. Worth
I have a buddy with a 6.0L. He's got a 5" straight piped system on it and the only thing that sounds all that different to me is when he starts up cold. The VVT has a bad-*** jet sound (better than our EBPV by a country mile IMHO)... 