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20Ducks · 05-24-2007, 08:29 AM

I removed the gray upper filter (underside of box cover). Perception is that it breaths better and has a deeper tone. Cost: $0.00.

05-24-2007, 08:29 AM	#5
20Ducks Lieutenant 28 Rep 403 Posts Drives: 2011 e93 335i w/M pkge Join Date: May 2007 Location: Shawnee Mission, KS iTrader: (0)	I removed the gray upper filter (underside of box cover). Perception is that it breaths better and has a deeper tone. Cost: $0.00. __________________ back by popular demand...
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