So I finally got another ELM and modified it (since selling mine to a member here), and did some more digging!
I found out that you can read your exact tire pressures in PSI through MS CAN and the SJB! My tire pressures were near spot on

I had them filled to 33PSI cold, they are at 33PSI cold (almost).
I also found out that you can access your PAM module (either MS or HS CAN depending on the car) and see exact distances things are behind you and what sensor is reading it. Can do this with the BLIS radar as well. I'm assuming you can even do it with the ACC radar as well. Pretty cool way to see if the senors are working the way they should. I found after I cleaned the sensors really well they had a much longer range. It went from 255 to like 175 right away and now it goes from 255 to 225 instead then slowly goes down. 255 = 8 feet I think.