Finally got my BMW software running!! It's unbelievable how hard it is to find information on that stuff. Turns out INPA is essentially useless for E70, I needed ISTA.

With ISTA running I was able to do the level calibration for the rear air suspension. Vehicle drives so much better today.

Also, had an on off issue with the right rear signal light. Bulb sockets in the rear housing are all burnt. Added an extra ground and everything seems to be working good again. Just waiting on new bulb sockets to show up in the mail now.