Hmm, I do however question the C02 powered turbo charger.

I bet it works pretty darn good. You have a liquid to gas conversion, keeping pressure relatively constant. You also have that expansion going on as it enters the compressor. Depending on the motor used to drive the impeller, it bet it can produce a good amount of boost. I would be worried about icing.

It is definately a unique idea, at the least.

Michael