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      02-06-2013, 03:40 PM   #4
IMG
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Drives: E90 M3, E60 M5, F90 M5CS, M4 C
Join Date: Feb 2008
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Quote:
Originally Posted by ///E-Rod///
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.
The E9X M3 S65 doesn't have an air mass meter so the rpm keeps jumping between 400-700 till it warms up.
It gets the afr from the primary O2 sensors. So you are fine and I won't worry about anything.
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