I don't notice a lot of drone. However it is a lot more noticeable with the Magnaflow on when the engine switches from V8 to V4 and vice versa. I can tell just by the sound when it has switched without even looking at the display. I also have an intake on my Tahoe so I don't know if that makes a difference or not. But either the drone doesn't bother me, or its just not all that loud. My fiancee has never said a thing about it and it does give the Ho a more burly sound.

 

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