Knowing when a regen is happening would require EGT monitoring which requires a bunch of aftermarket goodies to accomplish. I'm looking into some options, but having a 1 yr old at home re-prioritizes my cash flow

Honestly it rarely happens. Probably because I always have a few minutes of barely above idle driving to get to my house, but it's certainly more likely now after the re-flash. I've found some pretty reasonable OBDII dongles out there, and there's an app you can get, so I may rig up my old iPhone to monitor. I just don't like leaving stuff strapped to my dash, it's like a break-in invitation.