Warming up an engine

Bking:
A Question?
The atmosphere is made up of 78% nitrogen which according to the “great and the good” is an inert gas.
So every time your engine draws breath 78% of its swept volume is nitrogen.
So 22% is “volatile” gas eg Oxygen to combine with the fuel (diesel or petrol) to provide power.

So why do dragsters etc introduce more nitrogen in the form of NOx to produce more power?
Why not just introduce more oxygen?
According to theory nitrogen acts as a “buffer” wtf is a buffer?
And when a heavy diesel produces NOx why does its power not increase?
Apparently you have to have a cat to get rid of it because its a gas that causes “acid rain”
Any answers?

Chemistry ain’t my strong point. And I can’t get the correct notation on this phone, but we’ll have a go.
Where does it say NOx is being used in dragsters? Dragsters use nitromethane (Top Fuel) and they talk about NOX or nitro but that isn’t NOx.
Couple of points.
Nitrogen is not inert.
It occurs in
Nitric Acid HN(O3)
Ammonia N(H3)
As CF has said Nitromethane carries oxygen.
C(H3)N(O2)
The pollutant exhaust gases are oxides of Nitrogen.
Oxygen combined with Nitrogen, maybe two or three Oxygen atoms to each of Nitrogen. Because it can be either a lower case 2 or 3 suffix a lower case x is used, as is often the convention with unknowns.
Is there a confusion here between sloppy naming by drag fans: NOX and chemistry notation: NOx ?
I’m open to correction on my ‘O’-level Chemistry.
Edit. Agree with the question WTF is a buffer? Any link to original article?
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