Octane boosters do work. But i think people believe that adding some octane booster will make their 98 honda civic go the speed of light like u see on fast and furious when paul walker uses his NOS.
I use Octane booster in My 2007 kawasaki Ninja zx14. i dynod it with and without octane booster. it does work. there was a 4 hp difference increase with it than without it. on a stock bike with a power programmer tune. The stuff does work but i dont think i would use it other than if i took my bike to the track. not worth the money in my opinion