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      01-15-2012, 06:52 PM   #55
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Drives: 12' M3 E92
Join Date: Jun 2011
Location: Maryland

Posts: 195
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Originally Posted by Gearhead999s View Post
Mine does the same thing in the 4000 rpm range when the exhaust is hot.I think it is a normal thing as the exhaust note outside the car also changes so it is not an issue with mounting or loose parts in the exhaust itself.I really do like the different tones that this exhaust gives off at different RPM & temps.And I really like the fact that there are no annoying drones in normal day to day use and long distance highway driving.
Just installed my performance exhaust and I have a loud drone in the cabin at 4K in 6th gear.
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