ORIGINAL: wings
You should do more research before posting such nonsense.
Nitro requires LESS oxygen to burn than pure methanol.
This means more fuel and less air (oxygen) is in the cylinder when the engine fires. That means more power.
Nonsense?
Read a little, it's good for you. You may learn something.
What makes nitro work is that it contains easy to debond oxygen molecules, hence the perceived effects at higher altitudes, since the engine now requires LESS oygen ( which is not so available at the higher elevations. )
Oxygen is used to combust the fuel, so "This means more fuel and less air (oxygen) is in the cylinder when the engine fires..." is pure RUBBISH.
You need an equal amount of fuel to get the same power output, and the oxygen is obtained from the Nitro mix...
Our engines do not "burn" nitro, rather they oxidize the alcohol mix.... that is one reason they WILL run with zero nitro.
This is why the most pronounced effect of Nitro on tuning is at higher elevations, at lower elevations you are merely throwing away money on needless amounts of nitro mix ( unless your engine is problematic for other reasons... ) as the oxygen is already available.
As Downunder posted this has nothing to do with Nitroracers, which is a poor analogy.
And oh, btw, I did not write the material I quoted.