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      02-06-2013, 03:29 PM   #3
CalSE
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Drives: E92 M3
Join Date: May 2012
Location: OC

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It is a 2011 E92 M3, I use 91 octane here in CA, and I go to Chevron or Shell only.

Note that the idle dip only occurs at start-up as I mentioned in the OP. No dip, at least I don't notice anyways, while driving or at a stop light.
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