Well our stock or slightly enhanced ECUs will allow a little more power gen before pulling back ... per the tuning experts up to 95 octaneI don't get the octane booster thing. Octane is a fuels resistance to the air/fuel mixture igniting from compression before the spark. Therefore higher octane allows you to run more advanced timing. If you're not adjusting your timing for the track why do you need octane booster? Upping the octane rating doesn't mean more power without adjustments.
Or am I missing something? Placebo effect?
I have been doing long term logging under 91 ... if and when I drop in a tank of 95 (at a nearby fancy station) the timing data will be revealing as to what our ECUs really do