i have a flowmaster 40 exhaust on my car and when i purchased it 3 years ago it had really bad drone but sounded wicked. need to say i got sick of the drone and went with zoomers resonating tips and it quieted it down some. well today i went out and turned off the MDS and basically no drone at all on car. now my question is to those that have MDS off and full exhaust without resonating tips like i have do you have drone or not. I would love to put on new tips and get the deep growl back i had before.