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Old 10-20-2010, 07:32 PM   #28
tim330i's Avatar
Join Date: Dec 1969
Location: Boston
Posts: 11,503
My Ride: 03 Ti Silver M3
Just finished my M3 fuel filter change and already the idle smoothness has improved. If you haven't changed your filter recently I'd suggest it. The dirty fuel that came out of the filter was nasty!

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