Ran 100 octane for the first time. Wow

I hate to ruin the illusion, but your car did not run any better because of the higher octane...it ran smoother because of A-The purity of the gas, B-The lack of ethanol.
The octane rating of a fuel only indicates its resistance to detonation. If your car is timed and jetted to run on 87, and all you do is pour 100 in the tank, there will be zero difference in performance. If you go further, to 105 and better, you'll actually see a decrease in performance and mileage because the fuel will be too slow burning for the lower octane settings.