What about just chunking up the extra 10-20 cents for the good stuff, especially if you know you're going to pound on it, and you know you will.
The thing with low octane in a performance engine is this, if the ecu picks up excessive amounts on knock/clatter, even under light throttle, it will start retarding the timing through the "octane" tables. This will reduce the engine's ouput level and will cause your fuel economy to drop. So you could save a dime per gallon, reduce your engine's power and then use more gas to drive the car around. Where's the savings?
p.s. Shouldn't this be in a tech section?
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