Unless I've been misinformed over my life, gasoline is gasoline and it all weighs 6 lbs per gallon. Octane rating won't determine how rich or lean a mixture you've got, just how slowly the fuel burns i.e., higher octane burns slower.
The 100 octane low lead I burn in my plane and the 87 octane Avgas that the older planes bune e.g., Piper Cub, both weigh 6 lbs/gal. I see guys from the racetrack up the road at the airport all the time getting the 100ll for their cars.
Anyway, the DME has no clue as to what the octane is and doesn't need to. IMO, 110 will burn fine, but will be zero benefit even on a turbo, unless you're upping boost way over stock. Actually, you'll get slightly worse gas mileage with higher octane because it releases slightly lower amounts of energy. Doesn't affect power if used in high-output engines since they can't run on any lower without detonation, but a low compression na engine will get less power and mileage out of high octane.
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