I use an ODB-II Bluetooth adapter and an Android tablet with the Torque Pro app to watch for regen's
I have a PID to see when it is about to go into a regen, I got this from someone else... (Added to Torque Pro as a custom PID)
Name : DPF: Status
Short Name : DPF Status
Mode and PID : 018B
Equation : (C*100)/255
Min Value : 0
Max Value : 100
Units : %
Header : Auto
And I use the built-in EGT monitors in Torque Pro - 1 thru 4
The EGT's are for 1) DOC In, 2) DOC Out, 3) DPF Out, 4) Cat Conv
and there is one more for Cat Conv Out but I don't display it - don't care
When the status hits 100%, I see EGT's go up and can watch the regen. So far, when it has started the regen, I get on the highway and run it til the EGT's start coming down. At that time, I see the DPF status has dropped to about 25%
$8 for the adapter, $5 tor the App, I already had the tablet, and $30 (or so) for a tablet mount in the truck