I chalked the detonation up to a flat spot on my TPS. Yes, I did have the knock sensor connected and yes it was working. It takes about a minute for the normal timing maps to come back after it senses detonation.

Starion guys have been running 8.7 pistons for a good while now and I haven't heard much in the way of detonation complaints. You can run 8.7 on pump gas without problems. Personally, I wouldn't do it again without the oil squirters.

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Jamez: I run cheap gas myself. I don't think the Quest calls for premium. A assume the lower CR offsets.


You are braver than I. Premium isn't required per se, but it is recommended for the Quests.