I don't know if anyone tried it, but I found a couple stations near me carrying 110 for 3.99 a gal. I'm not talking about super high compression or FI applications, but rather your typical mods plus a 100/110oct tune? - thanks
I'd expect that 93 octane is going to squeeze as much as you're going to get out of the motor... unless you go blown or tear the motor down and build it up for higher static compression.