I see you asked about 93 octane in Boise. I've just moved back into town after being away for 3 years. I'm interested to know if you ever found a source for 93. I know United oil sells 100 octane unleaded for $10/ gallon, but i really don't want to mix. I may have to pull out a little timing as I have a 550whp GTS that seems to detonate a little on 91 with my current tune. thanks for for any info you can pass along.
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