Quote:
Originally Posted by Dean
So, are you agreeing with me or disagreeing?
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Yes.
Running at RFR in the summer on 91 shouldn't cause damage to a relatively stock turbo Subaru because of detonation. However, detonation can cause the ecu to slow you down to protect the engine from det. Higher octane will likely prevent some det in the first place. So 92-3 octane>91 octane at the track in summer when tuned for 91.