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      11-21-2012, 12:00 PM   #30
BimmerE82
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Drives: 2009 BMW 135i Sport package
Join Date: Aug 2011
Location: Tucson, Arizona

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2009 BMW 135i  [3.50]
I also used a thin bead of clear silicon, the type you can buy at the hardware store for around $6.00 a tube. I used this to make a water tight seal around the entire spoiler. I didn't want anything to get up underneath it and get to the double sided tape. It filled in any slight fitment issues very nicely! I used a bead of clear silicon for the sight gap on the edges of the CF diffuser as well but that's entirely up to you.
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