Got the 67A recall letter couple days ago. Here's my concern. Cummins 1.6 billion fine alleges Cummins installed "types of devices to cheat federal environmental laws". Defeat devices are designed to "bypass, defeat, or render inoperative emissions controls such as emission sensors and onboard computers. So what does the 67A emission recall have to do with the alleged types of installation of defeat devices? It may just be the timing of the 67A emissions "PCM" update that people are thinking it's related to the Cummins 1.6 billion fine. If not, then the next question is what is coming later as far as mandates to removing said defeat devices? I saw on YouTube video of the guy that test drove and pulling his tractor on trailer after he had the 67A emissions recall done which only updated the PCM software and he had no change in truck performance of any kind. California residence must comply or will not be able to re-register their trucks. It's the only state so far I am aware of that has implemented such mandate. I suspect in order keep any vehicle warrantee good, one must comply with the 67A recall for emission update in order to show proper maintenance. My warrantee is over anyways so right now I'm on the fence about doing it, especially if there seems to be no change or effect on performance, until I hear more on how it affects others and what other mandates and or recalls may be coming. Besides, DEQ testing for registration in my town is exempt for all Heavy Duty Diesel trucks or GVWR > 8,500, so there is really no need for me to comply with the 67A emissions recall.