i run 93 octane all the time in my car, but i have a sunoco that i live by that sells 104 octane. was just curious what kind of power difference would i achieve by filling it up with that at some point in time.

Octane Allows For Higher Compression Ratios, Higher Boost, Or Other High Performance Mods.... It Also Burns Cleaner Than Lower Octane Fuels And Has A Higher Flash Point Meaning It Takes More Heat To Cause It To Burn (prevents Detonation).