I dont know how it is inducted, but what if your pump goes out or something? Its electrical, that shit can go out at any time. Hell you can run out, case in point. Charles with the blue evo nearly fucked up his car with that meth shit at import showdown. He ran out like mid track and was reading like 6 volts of knock.

Meth injection is the opposite of nitrous. If you run out, you are still running less timing and more fuel, unlike meth, you are running more timing and no more fuel or maybe a little more if you up boost pressure. With hondata and its nitrous control feature, there is another map that it will switch to for nitrous and I presume that it switches back to the original map when/if you were to run out of nitrous.