Snappy,
104 octane boost will coat your combustion chamber with all kinds of red goo. You are paying $5 for a pint of stuff that has all kinds of worthless chemicals in it, and the main product in it is xylene. Look at most of the octane boosters. The main ingredient is xylene. So instead of paying $5 for a pint of xylene with chemicals that coat the plugs, pay $7 for a gallon of it. Do a search on xylene. It is 117 octane and it cleans the fuel system and doesn't hurt the o2 sensor