Question; can you get away with a little less octane at higher elevation? MCXpress is showing a 250 HP upgrade for the sidewinder but recommends 98 octane RON =94 octane USA(I think this is correct). I think the highest pump fuel in town is 91 octane. The elevations I ride are 8000ft. and up. What do you think, would the 250HP kit be safe with 91 octane pump gas over 8000ft elevation?