Comment by mindslight

I think regardless of implementation, if the added complexity reduces reliability and introduces forced failure modes it's reasonable for people to avoid these systems altogether. For example, EGRs causing fouling or DEF engine throttling.

This may be true for our group, but I know numerous blue collar workers at the poverty line struggling due to these systems. Corporations / manufacturers have no incentive to make these systems more accessible. Even if they did, more complex -> more expensive to repair.

> And it's certainly understandable that someone who knows how to repair things based on mechanical linkages would rebel against digital electronics.

They're pretty right to be incensed that something that used to take one skill set now takes two.

>. We shouldn't really be scared by a extra sensors, a CAN bus, and an embedded controller - assuming all of these things are openly documented and usable with freedom-preserving systems

At what cost? For what benefit to the user?

>. In fact we should welcome them, as extra telemetry can help avoid downtime and effect repairs.

Oh, great, so the someone at the OEM can decide my model correlates with a higher $$ use and jack up parts cost. I don't trust you not to do this and I don't even own a tractor. Someone in middle america who's been on the receiving end of the raw deal that the "educated" classes have been peddling for the past 40yr has even less reason to allow your telemetry.