BMW 3-Series (E90 E92) Forum - View Single Post - Switching between fuel octane levels & engine adaptation

benzo23 · 05-10-2013, 02:37 PM

Is there really that big a price difference between 87 and 91? And the ecu should re adapt after a few tanks to re advance the timing for the higher octane, but then again im not software brain.

05-10-2013, 02:37 PM	#2
benzo23 Colonel 74 Rep 2,848 Posts Drives: 14 F30 AW MSport Join Date: Apr 2010 Location: FL iTrader: (1)	Is there really that big a price difference between 87 and 91? And the ecu should re adapt after a few tanks to re advance the timing for the higher octane, but then again im not software brain.
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