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So does the exhaust drone come from the "sound" or from the "sound" resonating the pipes.

If from the latter then I need to modify the mount points to change the node points, if from the former changing the muffer or something should make a difference.

Anyone know what is the root cause cause of the "drone"??




it happens when the exhaust system hits the natural frequency of the car. it's kind of a combination of both. another idea to try is to use muffler clamps to affix weight to the tailpipes. that adds mass damping and should change the resonant frequency of the exhaust.


1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)