anybody ever ran a dynomax vt.

Anyone ever ran a dynomax vt muffler, its supposed to cut out drone because it has a spring loaded valve in it that opens at higher rpm to be a straight through muffler but under normal driving conditions it quiet.

I wonder how it would work on 2.7's since they wouldn't push as much exhaust gas through it.

http://www.dynomax.com/mufflers/dynomax-vt

 

All of the stock Toyota Yaris mufflers, affectionately called "The Pumpkin"...



...have a spring loaded valve to create backpressure for low end torque and yet allow more free flow at higher rpms.

Couldn't find any inside pics of it, but here's the Dynomax...

 

Did you find out any more info on this muffler? I'm curious myself.

 

No, I was mostly wondering how it would sound on the 2.7.
You should put one on yours and be the test mule.

 

^this