Please excuse me.
I am saying that it is a lot easier to change your car's computer than it is to change amount of additive you put in to make your car happy. How do you know if you are adding the right amount of octane? Would you be reading any logs to see if what you are doing is what is right? In the computer you can change what it "REQUIRES".
AK your whole life? As far as I know, there has never been that high of octane here.
We did a RWD conversion for our cars on the dyno at Hale's Technical. It was very effective for all of us. There is always an alternative.
Take it easy.