ironmark
Junior Member
I am in Nevada right now riding in NV AZ CA for the winter . I can only find 91 octane fuel that is oxygenated for the winter & the bike seems to have a slight spark knock , the bike has a 103 stage 2 kit in it with a custom map . Back home I get 93 octane & have no knock so I am wondering if it would help to add a octane booster & would the additive do any damage to the engine .