Dynomax VT mufflers
Ahhhhh HA!
I sit here corrected, sorry about that, yep! Your correct. I was thinking about the below muffler. Silly me. DUH!
And yea, I guess it is comparable-ish kindoff. A whole lot less fiberglass to quite it down. The valve takes up some flow area. Not that I would worry about it.
I don't know if that area on the otherside where the valve and springare happen to be "OPEN" to the rest of the case. I'd have to dig mine out to know.
It was quite good at idle.