Originally Posted by SSEi_MN
but what will 104 do to the ssei?
With 104 octane you will have less likelyhood of detonation, thus bringing knock retard to a minimum. You'll also run cleaner, and the throttle response will be somewhat improved. I'd suggest not running it too often (unless you can afford to), but use premium at the minimum.
If he just put regular in get a bottle or two of octane boost and dump that it. A moth ball becomes methanol when put in the fuel, raising the octane level to obsurd levels, but I really wouldn't go there (the moth ball route -the odds are without proper knowledge on the proper mixture ratio you will do more harm than good). So go get a bottle of NOS octane boost, or some other octane booster and drop that in. After a short time your octane level should be pretty much up to par.