Bogus. This is called water injection and has been around since the 70's. The theory sounds great - put some water vapor in the intake, and it will expand as

Bogus. This is called water injection and has been around since the 70's. The theory sounds great - put some water vapor in the intake, and it will expand as steam, increasing power, lowering consumption, and even lowering temperature. The trouble is actually in the emissions, which is why no manufacturer uses it. Catalytic converters require enough heat from the exhaust to kick off the catalyzation to reduce the NOx and oxidize the unburned Hydrocarbons. Cold temperature is such a problem that BMW started using electrically heated cats in late 90's so they could reach firing temp sooner and lower start-up emissions. Unfortunately, water injection cools the exhaust so much, that cats no longer work, thus radically increasing polluting emissions and eventually damaging the cats. Not so much an invention as it is warmed-over wishful thinking.