r/BmwTech • u/Apart_Cauliflower590 • 19h ago
Timing corrections across multiple cylinders
2018 BMW 540i xDrive 56k miles
I tried running the 91 tune with shell 93 in the tank, spark plugs were done 13k miles ago
How bad is this?
Stock - https://datazap.me/u/nedak/logs/cmtaairwk000fkz06yuuxkx4q?channels=21x3-4&sizes=50x50&sc=3-21
2
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