Dankie, The Air Ionizer takes away electrons from the air, so they are missing electrons, and hungry for electrons.
Inside the Injector you have Water, and Ionized air, (and exhaust gasses, but they are not needed for gtnt, think about rockets or jet engine retrofit... no exhaust gasses)
Water is obviously important... we are going to split it with high voltage... but then what?
THEN as soon as you split it, and pull off the electrons from the water molecule, they are absorbed by the ionized air. This is the exact same as taking them out of the water with the EEC, all you need to do is remove them from the water so they become critically unstable and can't reform. There is no room for an EEC in the injector, so you put the EEC in the Gas Processor and then the Ionized Air becomes the EEC inside the injector.