If you're talking about higher compression, everything else aside, you shouldn't need any more or less fuel. Higher octane, of course. Think about it...you're compressing the same amount of "stuff" more, then igniting it....it's going to give you more of a bang. Shouldn't require any more or less fuel.
and play around with it a little. try leaning it out in the lower rpm's...and or giving the car fuel to see how it reacts...as i know i can feel a difference with a drop in as little as 5hp over a given range.