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      09-08-2011, 11:43 AM   #8
baylor1er
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Drives: 135i coupe Blk on Blk
Join Date: Mar 2010
Location: Waco/Houston, TX

Posts: 99
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Its def. the wastegate. Mine does this all the time at a 70mph cruise. I have strait pipes and it is super noticable. I'm so used to it that I don't pay attention to it anymore.
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