Quote Originally Posted by newthings View Post
At the recommendation of my muffler man, I tried a Magnaflow 4x9, 20" body, which is a straight through design in stainless steel, it is a little more quiet below 2000 rpm, but hits a loud resonance at 3200 rpm. Not good.

Next I will try the Dynomax Super Turbo 4x9. Not in stainless, but still lifetime warrantee.
The more and more I hear about the Magnaflow muffler being too loud at higher freeway RPMs, the more I don't like it. By far, the very best muffler for the VX is the DYNOMAX - SUPER TURBO in the large 20" body. When it comes time for muffler replacement in my VX, the Dynomax- Super Turbo in 20" body will be my only choice. Just do a forum "search" for the thread entitled: "Muffler Help Needed"