Has anyone heard or tried Dynomax performanc VT mufflers

[malibuguy]

its very similar to our stock muffler.

Ive installed about 25 of these mufflers. Definetly work as advertised...however on cammed, big motors, the choppy idle & intense uneven exhaust pulses they tend to have seem to beat the bushings up in the muffler they begin to rattle after few months.

However I have not heard of one rattling on a modern "smooth" running car.

I have one that i plan to experiment with on my car...going to make a new exhaust with a race cat again & this time with no resonator