8th Generation Honda Civic Forum - View Single Post - SI with 87 octane gas *Threads merged*
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Old 12-04-2008, 09:59 AM   #147 (permalink)
ryker
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High compression engines create heat. Hot enough to cause lower octane fuel to pre-ignite or ping. You can run colder spark plugs, cool down the IAT, alter timing, or run high octane fuel.
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