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      12-05-2012, 01:09 PM   #427
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Drives: 09 328i E90
Join Date: Nov 2012
Location: McKinney, TX

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Originally Posted by flexbrah View Post
I have that in the low 2k RPM range as well but only when I'm accelerating. As soon as I'm cruising, you can't even hear it. I love the low RPM drone though... I think it sounds good. But then again, I'm used to listening to a boxster s with a fabspeed exhaust... now THAT drones.
I installed mine last night, and it behaves exactly same way; some drone 2-2.5k rpm during acceleration. Not sure it needs some break-in period. Tips are about 1" out, and I may try to make them stick out little more to see.