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Another muffler question.

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Old 07-08-2012, 09:42 AM
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Ph.D. in HUBRIS
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Default Another muffler question.

I was looking at the dynomax VT muffler.
Dynomax® Performance Exhaust | Mufflers | Dynomax VT™ Muffler

It has a door that is sprun so under high flow it will open and work as a free flow muffler but when under less throttle it closes and offers some more noise reduction. This is going on my Tahoe and I always have the family in it. I am looking for a touch of performance, sound when I want it, but still be fairly close to quiet when I am just driving the family around town.

Has anyone tried this muffler yet? It is build from stainless so that is a good place to start.
Old 07-08-2012, 09:44 AM
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Ive heard it rattles like hell...lol
Old 07-08-2012, 09:53 AM
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Hearsay or you heard one rattling? Wonder if it is the flapper making noise or a shitty install?

I like the idea of the higher back pressure/ lower noise till you open it up. If you notice it is the way mufflers are starting to be built. My buddies "12 CBR has a servo operated muffler flap.
Old 07-08-2012, 10:02 AM
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Everyone I have heard that installed one hated them because of the rattling. I had to laugh when someone like yourself makes a comment about a shitty install, you are the king of shitty installs.
Old 07-08-2012, 10:40 AM
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That is me! Glad I can make you giggle.
Old 07-08-2012, 10:56 AM
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how can a shitty install cause something INSIDE the muffler to rattle... sounds like you need to do some more research on the muffler you like so much...
Old 07-08-2012, 11:09 AM
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The fact that it has to be made to withstand heat moisture and pressure and has to made economically in order to make a profit can't be a good thing.

I am not surprised to hear it rattles.
Old 07-08-2012, 11:40 AM
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I like the concept of it, but the execution seems to be lacking a little.
Old 07-08-2012, 01:03 PM
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Originally Posted by silver-mod-o
how can a shitty install cause something INSIDE the muffler to rattle... sounds like you need to do some more research on the muffler you like so much...
I was asking about a shitty install because the muffler might not have been rattling. If a pipe was too close to frame or a hanger/clamp wasn't tight. That is why I asked if it was hearsay or first hand knowledge.

My other thought is doing a cut out. I could either leave it straight pipe or add this or a differant muffler. That way I can have 100% stock untill I find a muffler I like if I dont like the cut out open.
Old 07-08-2012, 06:27 PM
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I did some research and found someone with one of these on a dodge caliber(awesome car for sure!). Guy liked it at first but within a month the "clanking" noise of the flap opening and closing got worse and worse. His solution was my second consideration, cutout with an electric valve. I think I will do this and like I said if I want it quieter then straight pipe I will add a muffler down the road.


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