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if you plan to run 11.3:1, you're going to need some high octane gas, and great tuning...
a turbo'd 10:1 would be like a stock civic si b16 turbo'd...
easier to do for sure...
11.3:1 is high compression for anything on the street, but it can be done.
the turbo'd 10:1 would be easier to tune as well as easier to manage fuel wise.
if you're really worried about the mileage, etc. you're getting into the wrong mods for your car.
a turbo'd motor and a high compression NA motor would have similar mileage, within limits...
either way, it's about the same.
if you are getting the turbo, build the motor correctly for it, b/c it's an easier route, and a faster car overall
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