I would think so. The theory being that 100 octane being more resistant to detonation will allow the engine computer to keep timing longer as AITs climb.
If I had a choice between the 2 I'd certainly run 100 instead of 91. Peace of mind if no other benefits.
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2017 BMW M2 German Spec
6MT, Driver's Package --> SOLD
2018 Camaro SS 1LE. Because race car!
"Redline a day keeps the mechanics away"
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