Lateral-g Forums - Quiet, mellow mufflers?

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- - Quiet, mellow mufflers? (https://www.lateral-g.net/forums/showthread.php?t=56601)

USAZR1

07-02-2018 02:15 PM

Quote:

Originally Posted by OLDFLM (Post 679477)

I dropped 13db at idle by going from the traditional straight through 14" case mufflers (think Magnaflow, Borla, Pypes) to the Dynomax Turbos.

There are only so many designs when it comes to mufflers... go for the Turbo style where the exhaust pulses actually have to change directions and add an X-pipe if you want something quieter and liveable.

The bigger/longer the muffler case the quieter they will be... 3" race style mufflers sound cool unless you actually want to drive and enjoy the car!

I'm a mod on the Team Chevelle site and there have been many discussions about mufflers, over the years. Dynomax seems to be the leading muffler of choice, when it comes to quiet performance.

69hugger

07-03-2018 03:04 AM

FWIW, I am leaning towards the Dynomax Turbo or Flowmaster 50 series, but hoping my "audition" will clarify the decision. I also would strongly prefer a stainless muffler as my entire system is now stainless. That limits the Dynomax choice to an offset/ offset muffler, which is a change from the current center/offset setup. Not sure how easily that will be to change. I am hoping to keep the pipes relatively as-is.

stan65

07-11-2018 10:50 AM

Any updates?

I am in the same boat..... I want my cake and eat it too walk softly and carry a big stick!!!!

Stan

69hugger

07-11-2018 11:29 AM

Quote:

Originally Posted by stan65 (Post 680004)

Any updates?

I am in the same boat..... I want my cake and eat it too walk softly and carry a big stick!!!!

Stan

My exhaust guy talked me out of changing the mufflers UNTIL I get the LS3 tuned, which needs to be done because the previous owner put a Holley hi ram manifold on it. That really messed with the cold and low end tuning. It only makes sense to wait until the engine is running perfectly.

My tuning appointment is in a couple weeks. I will post an update when it happens. Should be in the next few weeks.

RT_66_Pro_Touring

07-11-2018 06:54 PM

Quote:

Originally Posted by Ben@SpeedTech (Post 679300)

I've tried several types of mufflers and the one I felt was the best for power/ flow and mellow quiet cruising was the Dynomax turbos. They're decently deep toned and quiet when cruising and come alive fairly well when you lay into it.

I agree. Here's a test of various mufflers. In this test, the Dynomax Turbo 17740 has the best balance of performance and noise level.

https://s8.postimg.cc/w68uurqtd/Muffler_Comparison.jpg

Beechy

07-17-2018 03:58 AM

never, ever flowmasters

GregWeld

07-17-2018 06:37 AM

/\/\/\/\/\/\/\/\/\

THIS

3" is definitely a sound increaser... went with 2 1/2" on the '40 -- engine builder (Don Hardy) said that was plenty for 550hp. I was pushing for 3" and they talked me out of it. BUT ------ I did have them put in electric cutouts for the rumble thru a parking lot show. Damn kids...... LOL

WHY? Just because.

ULTM8Z

07-17-2018 06:42 AM

I went with Walker Quiet Flows. Similar to the Dynomax super turbos which I was running before. When the super turbos finally needed to be replaced, I decided to try for something a little quieter. The quiet flows are in fact a little quieter, and very quiet overall. My system consists also of cats and resonators too.

USAZR1

07-18-2018 10:19 AM

Quote:

Originally Posted by ULTM8Z (Post 680294)

I need to check those out, as I've never heard of them, before.

stan65

08-29-2018 12:10 PM

Any updates?

Stan

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