So I've been reading and researching blah blah blah. What I've come to understand is exhaust drone is the action of the sound frequency harminizing with the metal of the frame of the vehicle causing a reverberation. Which is both heard and felt. Now the fact the 3" inch exhausts clearance from actually touching the vehicles heat shielding is guaranteed it brings me to the conclusion that this by far has to be a major player in what's causing the drone. So take for example the Borla, a 2.5" exhaust, I've read there's no drone but it's loud as hell. Now take the for example the MBRP 3" I read that you get drone. Some say hardly any but either way you spin it the drone is there. So am I correct in my theory that pipe diameter, due to clearance contacting the frame, is a contributor to drone? If I'm right I would ventur to believe that the exhaust hangers in fact also help prevent those vibration from transferring to the frame as well.