[Unreal]

There are a few ways to do it. You can have it warn off the IAT sensor since with the meth working the IATs will stay under a set level. Or you can get a flow sensor and put it inline and monitor actual meth flow, or put a pressure sensor on the line and warn off pressure. Then program in whatever you want. If Throttle>80% RPM>3000 and Meth PSI<80 display "WARNING METH FAILURE".

IAT method would be the only one that doesn't require extra parts, but the great thing about the dashlogic is the expandability and ability to take sensor inputs.

You could also easily do it off AFR gauge since meth will richen it up, set the warning so with meth off it will display a meth warning, and meth on it won't based off AFR over RPM range.