Leave your resonator on and it will not drone near as much. People have diff opinions on droning. Some like it and some dont. I got tired of it during highway travel. I had my muffs cut off, removed resonator, and chrome tips out the back... droned like hell when driving... sounded nice at idle, not too bad at WOT. But sounds like crap when compared to my setup now.
Sold my Cougar
. But I am in the market for another MN12 project!