Hey crotch what's up ?
In my own personal experience I got rid of the stock muffler & replace it for a smaller size;It did improve the deep loud but non disturbing sound on the VX which I love.
Few weeks ago I decide to run a 2nd muffler & pipe on the passeger side & now those mufflers sounds deep & sweet, I made fun of my self saying that @ 40 mph I feel. very sexy with the whole cabing vibrating LOL