ive got the 93 octane tune. in calif, the best you can get abundantly is 91 so ive been running octane booster which is extremely hard on plugs. there is one 76 station nearby that sells 100 octane unleaded racing fuel and ive switched to it at 7 bucks a gal, but seeing that its not a DD, its my fair weather toy, i can justify the cost. my ?'s are 1) is it going to hurt anything ( it seems to run much smoother) and 2) cant i run a more aggresive tune and mabey run more boost?