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**DirtyD** · 01-07-2013, 11:37 PM

Drone is that steady "hum" your exhaust has when kept at typical highway RPM. Much like the hum or drone a big motor or generator might have.

01-07-2013, 11:37 PM	#5
DirtyD Senior Member Join Date: Jun 2012 Posts: 5,594	Drone is that steady "hum" your exhaust has when kept at typical highway RPM. Much like the hum or drone a big motor or generator might have.