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Old 06-23-2007, 01:47 AM   #25
Peer
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Join Date: Nov 2006
Location: Palo Alto, CA
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JackG wrote:
> In an engine optimized to burn 87, you don't make or lose HP by
> using 93. You just pay more money.

Well, actually the best matching octane/timing would be a compression that's just on the limit to ping. However, since pinging is bad for the engine, the manufacturers are usually exaggerating the recommended octane rating just to be on the safe side.

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