HELP - Need Quiet Muffler without sacrificing performance ... or Dynamat?

Professor

Professor

New member
I know this is the opposite of the typical request. I have a set of Flowmaster Super 44 mufflers on the Marauder. It sounds great. I loved the old school muscle sound. In some ways I still do. Unfortunately, I have been diagnosed with a rare condition (Meneire's Disease) that affects my inner ear in a number of bad ways, including permanent loss of hearing in a very specific range and echo/resonance from certain other ranges of sounds. This means that my beloved Flowmasters produce a sound that makes it difficult for me to understand my passengers right at the frequencies of the human voice.

I love the car. It is my daily driver. An ugly option is to trade it for something that is ridiculously quiet (e.g. Lexus) ... but I don't want to do that. My question:

1) Can anyone recommend a free flowing muffler that is quiet (stock or quieter). I don't want to lose performance.

2) Has anyone noticed a significant difference in quietness from interior sound dampeners like Dynamat? Did you just put it under the carpet, or did it go under the rear seat and seatback, door panels, etc.?

Thanks!
 
The cheapest and easiest route would be to get rid of the flowmasters and go with some Magnaflows. They will actually outflow the flowmaster mufflers (CFMs) while also being slightly quieter as cruising speed.

Flowmaster is a chambered muffler while the Magnaflow is a straight-thru design. Less air bouncing around in the muffler will equal resonating frequencies.

https://www.youtube.com/watch?v=Xhir2VIK-V4
 
I run the Magnaflows as well, get a set of 18" mufflers. If that still isn’t quiet enough you can also put a magnaflow resonator on.
 
Professor said:
I know this is the opposite of the typical request. I have a set of Flowmaster Super 44 mufflers on the Marauder. It sounds great. I loved the old school muscle sound. In some ways I still do. Unfortunately, I have been diagnosed with a rare condition (Meneire's Disease) that affects my inner ear in a number of bad ways, including permanent loss of hearing in a very specific range and echo/resonance from certain other ranges of sounds. This means that my beloved Flowmasters produce a sound that makes it difficult for me to understand my passengers right at the frequencies of the human voice.

I love the car. It is my daily driver. An ugly option is to trade it for something that is ridiculously quiet (e.g. Lexus) ... but I don't want to do that. My question:

1) Can anyone recommend a free flowing muffler that is quiet (stock or quieter). I don't want to lose performance.

2) Has anyone noticed a significant difference in quietness from interior sound dampeners like Dynamat? Did you just put it under the carpet, or did it go under the rear seat and seatback, door panels, etc.?

Thanks!
Click to expand...

Go back to the stock mufflers.
 
The stock mufflers flow well. In fact the stock system flows fairly well. The choke point is right before the mufflers where the piping sizes down for some reason. Swap that section out with 2 1/4 X or H piping and your all set. Quiet, but free flowing.
 
stock would be fine, doesn't look like you have a ton of mods anyway and the mufflers as others have said are not much of a restriction.
 
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lji372 said:
i have the 18's on blue n/a car. all bark zero bite=EPIC fail
Click to expand...

Then you must have put an X-Pipe in......raspy crap that sounds like a couple mad Hondas with "Fart Can"!!:rolleyes:

My Magnaflows are a little louder than when new but ALL sound is out back......NO DRONE.....JUST RIGHT!!:beer:

Sorry about your "EPIC fail"!!;)
 
Marauderjack said:
Then you must have put an X-Pipe in......raspy crap that sounds like a couple mad Hondas with "Fart Can"!!:rolleyes:



My Magnaflows are a little louder than when new but ALL sound is out back......NO DRONE.....JUST RIGHT!!:beer:



Sorry about your "EPIC fail"!!;)
Click to expand...


Only epic fail is n/a

Sounds good- but it's a poser therefore fail
 
You know I dropped the back cats with stock mufflers. Not to loud, not to soft. It really does give a nice low growl.
 
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