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      11-14-2010, 01:45 PM   #63
andrew270681
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Drives: E92 M3
Join Date: Nov 2010
Location: Sydney, Australia

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Quote:
Originally Posted by cv8 View Post
Unsurprisingly, replacing the pre-cat has not cured the problem.
Im curious to see what it is. My car does the same thing! Just happens for a second then goes away.

My stealership told me its normal everyone here says its not..

Im very curious to see if it is the check valve on the vanos. Makes sense.