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      12-21-2011, 07:46 PM   #35
BQTuning
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Drives: 2012 Z4 sDrive35i M Sport 6MT
Join Date: Nov 2010
Location: bq@bqtuning.com

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Once I strongly believed it was tune related for those tunes that cannot modify returned fuel mixtures while running higher boosts. I am not still not 100 convinced that it is not.

However I do believe fuel in general is the real culprit of the type oc octain and quality fueling the car.


I am nearing 12k miles on my 335is, no issues and I ride the hell out of this car.