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serialk11r
You are fighting a loosing battle, and you wil likely melt your cat with 100 octane in the tank, due to the close placement of the "precat" or whatever we are calling it, to the exhaust valves,
when I changed from 91 to C16 it started trying to make boost at idle due to the fuel still combusting after the exhaust valves, EGT went through the roof, etc.
you need mare timing advance to make race fuel work, its not nice to have more timing it is required for the combustion event to coincide with the ~14 degree ATDC magic number, it will most certainly kill power (especially up top where time for combustion is narrower) because higher octane fuel (as you stated) has the same power density, it is simply harder to ignite (that is exactly the definition of octane "resistance to ignition")
I prefer the AKI method, as it allows Ethanol fuels to be compared also, taking into account the cylinder cooling...nevermind i'm diverging from the topic at hand.
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