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A quiet performance exhaust?

hmmm...

A quiet performance exhaust?

Postby KYBuckeye [OP] » Dec 01 2014, 4:46am

So I have a GMPP Sport muffler on my L33 5.3L. I also have a K&N CAI. The truck was tuned in person by Blackbear tuning. However I'm getting tired (and I'm getting old apparently) of the constant vroom vooom of my muffler. Sure it sounds nice for like 15 minutes, then it just annoys me. My question is, is there such thing as a "performance" muffler that sounds stock? I wouldn't mind just putting some regular old muffler back on if I didn't think it would affect my tune. Then again maybe a muffler swap is so inconsequential that switching to any stock sounding muffler wouldn't affect it anyways. Any opinions?
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Re: A quiet performance exhaust?

Postby Rios09SLE » Dec 01 2014, 4:50am

I'm in the same boat as you and I'm still young. But after awhile the sound does get annoying. Next weekend I'm getting a factory cat back for cheap. Probably next year I'll add an electric cut out to open it up and have the sound of straight pipes.
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Re: A quiet performance exhaust?

Postby 19trax95 » Dec 01 2014, 5:23am

I'm fairly certain that magnaflow makes a quiet yet good flowing muffler. I seem to remember seeing a thing called a "quiet flow" in a magazine.


Edit: looks like walker makes the quiet flow I was talking about. http://www.walkerexhaust.com/products/mufflers-muffler-assemblies/quiet-flow-ss
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Re: A quiet performance exhaust?

Postby 350_Malibu » Dec 01 2014, 5:28am

^^ Yep Magnaflow, that's what I put on my Chevelle to quiet down the Flowmasters I had on it. I'm with the OP on the exhaust, even the stock exhaust seems to loud for me and I'm not even old yet, only 38. :?

I should have bought a Cadillac! :lol:
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Re: A quiet performance exhaust?

Postby 350_Malibu » Dec 01 2014, 5:41am

This is the muffler on my Chevelle (2 actually, I have duals out the back), made a beastly 350ci with long tube headers as quiet as my stock truck exhaust, but when at WOT the thing screams. Best of both worlds...

http://www.magnaflow.com/02product/shop ... n&id=11753
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Re: A quiet performance exhaust?

Postby 350_Malibu » Dec 01 2014, 5:50am

Just realized you also have a CAI, the CAI can also make it louder under throttle. They seem to not be as muffled as the stock intake since the filters are more exposed under the hood, my old truck increased by what I would say was 15-20dba at least with the intake mods on it. Just thinking that might also be part of your sound problem, but not sure. Just food for thought.
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Re: A quiet performance exhaust?

Postby KYBuckeye [OP] » Dec 02 2014, 5:18am

Thanks for the tip on the MagnaFlow. I'll have to check it out!
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Re: A quiet performance exhaust?

Postby 19trax95 » Dec 02 2014, 5:32am

Also, I'm not sure exactly what kind of sound you like, but...

I have a dynomax VT muffler on my truck.

It is quiet as stock at idle and cruising speed/rpm. But when under load or when you punch the throttle a valve opens up to allow you to hear it a little bit.

I still barely hear it in the cab but outside and behind the truck it sounds like a nice deep tone, but isn't exactly loud.

I too got sick of the loud and drone I had on my last truck. Although it sounded awesome it just got old to hear every day.

The dynomax VT uses a similar valve as the 2014 trucks use to reduce v4 mode drone. And dynomax has a "zero drone guarantee" and it's true. There is zero drone.
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Re: A quiet performance exhaust?

Postby KYBuckeye [OP] » Dec 02 2014, 4:42pm

Another great option to look at. Thanks. It's funny, I wasn't annoyed that much at my exhaust until I spent a few weeks driving my dad's stock silverado. (Same generation same 5.3). I was pleasantly surprised how much I enjoyed it.


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Re: A quiet performance exhaust?

Postby Idryfly5 » Dec 02 2014, 5:08pm

What about throwing a resonator or bullet on before the muffler?
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