Thread: Sooting Up
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      02-11-2013, 04:51 PM   #7
Freon
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United_States
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Drives: 2009 135i
Join Date: Nov 2007
Location: Indianapolis

iTrader: (3)

I'd go with zero, or as long as it takes for your ears to get used to it.
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2009 BMW 135i 6MT Sport, AFE intake, Cobb AP, Apex 18x8.5+9.5, 255/275 PSS
Appreciate 0