Yes to remove the drone a branch resonator per muffler can help, or eliminate the drone.But it needs to be correctly sized. As the resonance needs the correct volume to disapate its self.
I added some to my setup, but i didnt size it right. So this winter i will redo it.
Current, i3 Capparis White, Lodge interior
Ex- F10 550i Xdrive M sport, white
Ex- trade-in 2008 E90 M3