To answer your earlier question about the value of TripTek, I found the TripTek to be most valuable for its engine monitoring function, e.g. engine/tranny temp, tranny gear, boost pressure, mpg, etc. The trip computer functions were convenient but not real important to me, and I found little value in the Checklist function (I have my own).
Former owner of 2004 American Tradition and several other RVs
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC