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      04-19-2019, 09:08 AM   #5
E30 Racer
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Drives: '11 1M, '09 335i M Sport
Join Date: Aug 2011
Location: Ohio

iTrader: (2)

Also keep in mind the N54 PCV system isn't ideal, contributing not only to consumption but and dirty intake valves.

How many miles on your 1M?
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