Quietest replacement muffler--5.7? - Jeep Commander Forums: Jeep Commander Forum
Exhaust Questions or advice about exhaust systems? This is the place...

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post #1 of 15 (permalink) Old 06-29-2010, 05:10 PM Thread Starter
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Quietest replacement muffler--5.7?

08 Commander 5.7, 12,000 miles and new to me. Sewing machine quiet and needs a little exhaust help. Anyone run the stock muffler without the resonator? What is the quietest after market available with resonator?

Also, any performance increase with a std K&N?

Thanks, BCB
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post #2 of 15 (permalink) Old 06-29-2010, 09:43 PM
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Im not quite sure I understand what your asking. Do you want to replace your stock muffler with something a little louder but not to crazy?




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post #3 of 15 (permalink) Old 06-29-2010, 10:02 PM
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I interpet your question as, what is the quietest aftermarket exaust that has some 'tone'?

If this is correct, I'd go with the Borla cat back.
Has tone on acceleration, reasonably quiet at steady speeds, and all T-304 stainless for a true lifetime exaust system.

However, if you are going to be towing much I can't recommend anything but stock.
The aftermarket systems do sound nice when just moving the Commander but really sing the V-8 song when towing.
Sound is subjective, but that steady V-8 working sound grows tiresome after an hour or so IMO.

Personnal experience, my 1997 Chev. long cab long box truck.
I installed a Gibson cat back about 8 years ago.
I began towing a 24 ft. enclosed car hauler about 4 years ago.
Sounds great, no trailer.....nice tone on accel. , shuts up at speed.
Loaded trailer, sounds incredibe but becomes incredibly tiresome after a while.
I haven't had enouph long tows to drive me insane, but I'm sure glad I kept the stock system and put it up in the rafters.
If I start towing longer distances, that system will be coming out of retirement.

Keep in mind, I'll soon be 60 and I have found as time goes on, noise tolerance has been becoming less.
If I was still in my thirties or maybe still in my fourties, I probably would be more willing to put up with the racket.

My opinion,
Rob


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post #4 of 15 (permalink) Old 07-01-2010, 10:48 AM Thread Starter
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I am looking to get a little more sound than stock so a quiet aftermarket is what I am looking for. My alternative is to remove the resonator.

Thanks Ron, I just retired and will be towing more now. May be the noise is bouncing back off the trailer--not what I want either.

Anyone just remove the resonator?

BCB
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post #5 of 15 (permalink) Old 07-02-2010, 09:04 AM
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my magnaflow is very quiet

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post #6 of 15 (permalink) Old 07-02-2010, 11:00 AM
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Originally Posted by Urbancrawler View Post
my magnaflow is very quiet
I like mine, too. Seems to be just right sound wise. But you can hear it when you get on the skinny pedal.

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post #7 of 15 (permalink) Old 07-07-2010, 12:21 PM
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Quote:
Originally Posted by BackCountryBob View Post
I am looking to get a little more sound than stock so a quiet aftermarket is what I am looking for. My alternative is to remove the resonator.

Thanks Ron, I just retired and will be towing more now. May be the noise is bouncing back off the trailer--not what I want either.

Anyone just remove the resonator?

BCB
Be prepared to listen to drone if you do decide to chop off your resonator. I have a 2006 Dodge Magnum RT AWD and one of the first mods I did was remove the resonators. The exhaust would drone from 1000-2000 rpms.
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post #8 of 15 (permalink) Old 07-13-2010, 12:11 PM Thread Starter
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I tried the stock without the resonator and it was too quiet so we installed a Magnaflow SUV without the resonator and a rectangular box chrome tip straight out under the bumper. Nice low rumble and quiet inside the cabin.

I also installed a K&N drop in and the combo seems to give a little more power.

A 2" lift goes in next week.

Thanks for the replies.

BCB

Last edited by BackCountryBob; 07-13-2010 at 12:13 PM.
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post #9 of 15 (permalink) Old 08-20-2010, 04:32 PM
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In response to Robby re towing with 5.7 hemi with aftermarket exhaust, I regularly tow 2,000-3,500 lbs with my magnaflo hi flo cats + muffler and experience no drone whatsoever once rpm falls below 2,000. I find this easily between 60-65 mph and rarely go faster than this anyway. Fatty

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post #10 of 15 (permalink) Old 12-13-2010, 09:37 AM
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Quote:
Originally Posted by Rottyfan View Post
Be prepared to listen to drone if you do decide to chop off your resonator. I have a 2006 Dodge Magnum RT AWD and one of the first mods I did was remove the resonators. The exhaust would drone from 1000-2000 rpms.
Resonators usually change the "tone" of the exhaust and often just at certain RPM, they are sorta tuned to catch or cancel certain sound waves. They also have very little restriction, so they do NOT hurt flow or power much, if at all.

So, like Rottyfan is saying, removing the resonator may NOT change the noise "level" at all, it will just result in a more annoying or less desirable noise at the same level.

If you get an aftermarket muffler, specifically designed for the Commander, and a tailpipe without a resonator is NOT part of the muffler, then likely it was designed to work with the resonator.

If you're getting a universal type muffler, then you either have to experiment or trust subjective opinions from those that have the same muffler with the same configuration Commander as you.
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