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Bruce M. Bruce M. is offline
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Join Date: Sep 1999
Posts: 301
I would run my '78 930 (Motec efi) on 89 octane ONLY if I knew it would not be boosted significantly. As in leisurely drives on the highway. For track use, 100 and up. For "regular" driving, 92. It makes zero sense to risk detonation on these cars. Especially the hopped up ones, with 25 grand-and-up engine rebuilds on 'em.
Old 09-05-2010, 11:49 AM
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