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Just added a Silber turbo to my 19 RMK 800. Absolutely amazing. I ride at 8000-11,000ft and using my #5 spring all was great. Decided to try my #7 and encountered some detonation, guessing I need more octane. Was running straight 91 non-eth. I happen to have a sealed 5gal drum of VP C12 I use in a 2stroke dirt bike. Wondering if I can add a gal or so to each fill up of 91 to resolve my det issue..?? Any advice is appreciated!