He he he..... I'm not buying this idea tho, just for the fact that CO2 displaces O2, which means it could kill combustion. CO2 is widely used as a fire extinguisher. If something happens that for some reason, vapor starts heading towards the intake, BAMMM combustion goes away.
Check out this link:
http://www.designengineering.com/products.html
Here's the review from antoher board:
http://www.automotivetech.org/forum/...&highlight=CO2