mac valve/aem boost control valve

[afmafia]

hi what does anyone know about these valves. im looking for a failsafe for my aquamist hfs-1 . i keep hearing that theres a way to cut boost if i run outta meth. any info is greatly appreshated.

[afmafia]

As usual, a high degree of options for the two “failsafe” outputs, enabling user to switch map, lower boost when “low flow”, “high flow” and “no flow” is detected.
what items do i need to do this thanks ????