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.

 

Ive heard it rattles like hell...lol

 

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.

 

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.

 

That is me! Glad I can make you giggle.

 

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...

 

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.

 

I like the concept of it, but the execution seems to be lacking a little.

 

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.

 

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.