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      12-03-2012, 03:10 PM   #35
mocohead
First Lieutenant
 
Drives: 2012 328i (ED)/ 2011 328i (ED)
Join Date: Sep 2010
Location: CA

Posts: 397
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OP my guess is that you had detonation due to using 89 octane fuel.

Really you should run the highest octane gas possible, and preferably only tier 1 fuel.
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