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      05-04-2009, 10:17 PM   #3
Finnegan
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Drives: Z4M/. Z3M, E36/46 M3
Join Date: Oct 2008
Location: Teaching the dog to slalom

iTrader: (21)

I recall reading over on the e90 site that some 335i owners (335 is DI) have reported the same thing. There was some talk about methanol injection as a way to both cool the intake charge and "wash" the valves and [hopefully] prevent carbon buildup.