CO2 - Curious

[david-b]

Hey all,

I had brought this up in the Forced Induction Forum a long time ago, and I've been thinking again. I was thinking, instead of NO2, why not CO2? I did some research, and they do make CO2 kits. CO2, being cold, compressed air, sprayed into the intake could cause a improvemnet in perofrmance. The other day when I was cleaning up the engine using brake cleaner and compressed air, I decided to turn on the engine, and spray some CO2 in the CAI. There was an instant idle surge to higher RPMs. Regular idle is 500-650, the surge was up to 1200+. This was the only test I did.

The people over at the other forum said it would take alot of CO2 to actually get any power from it. But, the little I sprayed got a pretty big surge. I don't know where to go from here. Any ideas? Thoughts? Suggestions? IDK what to do know with it. lol Thanks

[JoeWagon]

Here are some basics on injecting anything.

I believe nitrous molecules split apart under the heat of an engine. Then, there is just more oxygen to burn, like if the airflow from the turbo was greater. There is a small cooling element, but the added oxygen/cyl pressure/power causes a net gain of heat. Adds power.

Propane acts as a higher octane, with very minimal cooling as well. Think race gas all the time. Maybe someone can figure out if your fuel was 90 octane and propane is 110, injected in a 20% ratio to fuel what the net octane is. Can run more heat before knocking.

Water is just for the cooling, goes hand in hand with water/alch or alch injection. Whether it burns or just vaporizes under the heat, it has a cooling effect and alcohol has a higher octane as well, 130 for meth. Avoids knock by being cooler and also octane boost.