Its legal on the track but not on the road
The answer is yes, you can, but the question should be what do i need NOS for? because a connected NOS system in a car on public roads in Canada is illegal, and I'm fairly sure this goes for all over the world. So if you have an engine that is hopped up enough to handle NOS, then most likely is isn't street legal anyways. if your car is street legal, just remember to disconnect the tanks, and hide the hoses.
Nos is short for Numbers.
"Nos."
The Nos kid is a mythical beast who is addicted to the Nos energy drink, and cheesy nos jokes (replacing not with nos). It has blindingly white skin, and flosses with organic floss.
Nos is dangerous
Nos vemos
yes you can get nos you just need to do races and they give you a car with nos
There is no such thing as a "Nos" cow.
Singulari Nos was created in 1834.
Entre nos was created in 2009.
Vehementer Nos was created in 1906.
Nos attendentes was created in 1217.