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      10-29-2009, 07:45 PM   #18
midlife
ocasionally in crisis
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Drives: '08 335i cabrio
Join Date: Jun 2007
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imho, if you ONLY have this noise during cold start in the morning i would not worry about it.
fwiw, many people with aftermarket dps (like me) have this metal rattle sound for first 4 seconds during start up in the morning. - that is the only time i hear it.
... i also have a slight wastegate ticking while idling - but i have minimal lag - so i donīt mind the noise too much at all.

my 2 cents
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