I have it all updated to include the data pack.

1. Why won't it display my trans temp?

2. Why does it display some temperatures in celsius?

3. Where can I download a more comprehensive manual that covers all the options and what they mean?

any is free to answer any of these questions if you know the answer. I'm bummed about the trans temp right now I was looking forward to having that while off road and towing hope its just a glitch in the software or in my head LOL