Same applies to most any "OBd2" scanner Limited access and no datastrem

How deep does a hobbyist get?

I picked up an ancient OTC Monitor 400 to work on my pre OBD2 stuff, 100 bucks. Obsolete and no upgrades available. Currently I also have a Bosch Mastertech, last updated 2010. Works on everything we need but obviously not fully functional on newer stuff. It can be updated but why?