Yes, I was aware of the reason for running higher octane. But I wasn't sure where the Busa stood in its stock form. My old Nissan 300 twin turba used only high octane gas. It still suffered from a serious lack of performance (I'll stick with good old American Steel from this point on). Not sure about 4 strokes, but in the 2 stroke world we were advised by are sponsers not to run AV gas! Would that same bit of info apply here? I know there are some additives to this fuel source that are harmful to two strokes. What do you think Doc?
Want to get educated about fuels goto this website (1st of two part series). This info is obtained from a PWC engine builder. Personel Water Craft, PWC. The info is alittle old but still usefull.
http://www.groupk.com/tec-gas96.htm