Aquamist HFS-3 and MINI Tank GB

[LASRGUY]

I have the failsafe connected which means I get a wastegate error CEL if I turn off the HFS-3. The next time I get the car on a dyno I'd like to get a baseline with the stock tune and no meth. Can anyone confirm whether leaving the system on but setting the threshold full cw will disable spraying meth at WOT? This could also be handy if I'm ever on a trip and run out of meth. (I'd avoid pushing the engine hard with the meth disabled)