I found this,
http://www.autoenginuity.com/products.html
They sell a Chrysler software add-on that gives you access to much more data off the BUS. see
http://www.autoenginuity.com/Chrysler-Sensor-List.html (search this text for "diesel", for fun)
This will let you see tranny temps, exhaust temp, EGR valve position, for instance. It also reads
" VM Diesel Status - Old Fuel Consumption" where VM is our italian friend?
Hardware + software = $400
Since the interface to the scanner is through a PC or Palm, all the data is recordable over time. Collect the data while driving around, then plot the data on charts.
I see this as a way to really find out what is going on, so that I can approch the dealer to do warrantee repairs prior to all out failure, for instance.
I emailed them about compatibilty with the CRD, and they are 'getting back to me".
Maybe some group pricing. What about a "club unit" that we check out like a library book?
Bill