Running a higher octane fuel will not increase your HP with a 10:1 compression ratio... It won't hurt the car either... If you really want to increase your octane level, just go to your local hardware store and buy a gallon of 100% Toluene. It is a hydrocarbon normally found in gas. It has an octane level of 122. Add one gallon of Toluene to 5 gallons of 91 pump gas and you're good to go.

If you really need to boost HP from your fuel use an oxygenator such as Klotz Coxoc, or if you're really frisky, Dioxane. A 5:1 mixture of pump gas & Coxoc and the proper ECU mod should result in a 10% +/- HP increase... For that matter, the same fuel mixture with your OEM ECU should give you about a 5% increase in HP... The OEM ECU will advance itself to a certain point based on its "learning curve", but not to level that you expect...

BTW... WILL YOU BUY ME ABOUT 500 GALLONS OF THAT 110 OCTANE GAS FOR $2.89 ? PLEEEZZZEEEE !!!!! YOU CAN TELL IF IT'S 110 OCTANE IF IT'S BLUE !!!