5.7 in a Corvette with 6 spd. CAI and cat back only. Trying to tune for 93 octane. Would it help for power or reducing detonation? 180? 160? I understand how to do the fan settings if I change it. Stock appears to be around 192 deg. Right now there is some small knock reduction (a few degrees) above 4000 at wot. I wonder if a cooler temp would help that or do i just adjust my timing map some more.