This exhaust is a Jic-Magic purchased on ebay a couple years back. There is no drone from this exhaust. The only problem is two hangers broke off, had them welded and now ready to go back on. The temp exhaust, currently installed, has the 2800 to 3000 drone. Why the Jic-Magic has no drone is unknown. I always thought it was the longer pipes or maybe the way the mufflers are built.