Damn I always wanted to live in California but that's the only thing over there is you guys can't get any real gas. I can get 93-94 octane here for like $1.75-1.80 a gal. Hell the sunoco down the street sells Cam 2 race gas I think its like 108 octane for under $4 a gal. About the timing adjuster on 91 octane you could do it just dont get to greedy and if you wanna bump it up cuz your going to the track or something just put in a can of octane boost and you'll be straight. Just remember to bump it back down the next day.