No longer exists.
It got hard to tell after I tuned it. Usually I saw an mpg drop but I wasn’t seeing that. Thankfully, if you tune you should get an Autocal that also functions as a diagnostic tool. In the scan tool area, it will tell you Last Time since Regen in miles or Km, and also tell you the current state of Regen, either None or Soot Mass. At Soot Mass, it is going through a cycle.Sticky FTW
How do you know your regen mode when there is no sign of it happening?