But for the volume injected vs the volume of air around it, and the temp difference?

 

yes, the horsepower benefit comes from the added oxygen and fuel. youre 100% right about that. but try to run too much oxygen through an engine without a cooling effect and youre going to have a lot of problems. read my previous post about how nitrous lowers the charge temp by around 80 degrees. we may have been typing at the same time there. but if it was as easy as just running compressed air through the engine to see the benefits, we would all just be filling up our nitrous bottles at home for free with our air compressors.

as for krewats comment about it being colder because its compressed, hes mostly right there too lol. when you compress nitrous or nitrogen it puts it in a closer state to being a liquid rather than a gas. really low temps or really high pressures cause some gasses to turn to liquid. nitrous and nitrogen being two of them. which is why a nitrous bottle is filled to about 900 psi. but pure oxygen doesnt work that way. if you compressed pure oxygen to that same psi, it will actually get hotter. instead of turning to a liquid, the oxygen molecules "rattle around" inside the tank and generate more heat. oxygen has to have another molecule attached to it before it can cool under pressure. CO2, N2O, etc. im sorry for being such a science geek guys, but thats what i get paid to be

 

read my post before this one. nitrogen can turn from a gas to a liquid based on temps or pressures. pumping your tires up with nitrogen would have no affect on temps because its only at 50 psi. but put that same nitrogen in a nitrous bottle at 900 psi and its on the verge of being a liquid. when you purge a nitrous system, you can actually see liquid drops going up in the air. its not just gas.

 

and by this i am talking strictly in the gas state. compressed, pure oxygen that is still a gas heats under pressure. but once you reach a high enough pressure to turn the oxygen to a liquid, thats a totally different story. youre talking negative 200-300 degrees there. which would freeze your engine on contact lol.

 

[QUOTE=phillips91;6429704]just doing my part to take up for the psd. QUOTE]

Right on Brother!