2002 gsxr 600
I let my friend take my bike for a ride today and had him put some gas in. the retard that he is put 85 octane in (I live in colorado). he told me it was bogging. I have only put 91 in it up to today. I was thinking of either syphoning the gas out or puting an octane booster in. which do you think would be better? Also do you think i will have any long term dammage?