Nitrous
as far as a NOS system for a nitro motor, that has been tried long ago.
making the nitrous oxide injection system is the easy part. simply use a small NO2 cylinder thats used for making whipped cream or "whippets". they look exactly like co2 cartridges for BB guns, but you get them at chef supply stores. they are filled with nitrous oxide.... NOS. then a small solenoid valve and spraybar into the throat of the carburetor activated by a third channel on your transmitter.
the problem is the increased need for lots of additional fuel to burn with the nitrous. nitrous is a source of concentrated oxygen to burn the additional fuel you add at the same time as the nitrous oxide. without the additional LARGE amount of necessary fuel flow injected at the same time as the nitrous, you go either boom or nowhere.
just my 2 cents. and these JAG guys are blowin smoke men.