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Old 03-12-2026, 04:58 PM   #7
gtstorey


 
Drives: 2010 Camaro SS2,L99, LSA SC
Join Date: Aug 2017
Location: Huntsville, AL
Posts: 2,478
And how does the ECM know the octane? It will have to be running reduced timing based upon knock and increases as no knock is detected. I would not consider that as running more timing than commanded. Not sure where the wideband would come into play on this unless there is added retard based upon assumed knock based upon leaner AF, which won't change based upon octane.
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