How's this idea:
"Nitrous" does not equal "N.O.S."
"N.O.S." (Nitrous Oxide Systems) is a particular brand of a nitrous system. Nitrous is N2O, using the word NOS for N2O comes from The Fast and the Furious.
NX, ZEX, NOS, Nitrous Works, are all nitrous kits.
It should be interesting when TFATF2 comes out, NX is their nitrous supplier, will the term "NOS" be replaced by "NX"
Just thought it might cut down the number of posts where people keep say, "Just put some NOS on your car"