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      12-09-2010, 12:53 AM   #9
erics02wrx
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Drives: E90 M3
Join Date: Aug 2010
Location: Snohomish WA

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Quote:
Originally Posted by swamp2 View Post
Very nice DIY, thanks for sharing. How is the sound afterwords? Hopefully not too much increase in loudness (unless you wanted that).
Maybe 5% louder than before, no change inside the car. It did add a little more rumble, sounds awesome!
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08 E90 M3, slick top, single hump, 6MT
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