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      01-16-2012, 02:24 PM   #20
pbonsalb
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Drives: 08 E90 M3, 99 E36 M3 Turbo
Join Date: Feb 2011
Location: Concord, NH

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BMW uses hemholtz chambers on some of its exhausts and some of its intakes. AA uses them on some of its exhausts, as do other tuners.