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Old 12-12-2015, 02:23 PM   #11
Pnut
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Join Date: Jun 2014
Posts: 61
Quote:
Originally Posted by Luv2Box View Post
Drone is caused by exhaust valve harmonics. The thinner the header and exhaust metal the louder the harmonics. Most all third party exhaust systems use a thinner metal so drone is more prevalent. That's why your OEM headers look like something a mad eastern block plumber put together and why your OEM exhaust is so heavy.
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