Step 1. Add in the stock resonator

Step 2. Marvel at just how different this one piece of equipment made it sound.

Yeah pretty much the straight-piped buzz was driving my crazy because it was dumping right outside the door and making my left ear go mad.

Didn’t expect it change as much as it did though, it sounds almost civilized now. Doesn’t backfire as much on decel now though, but those were a bit “extreme” anyway.