E38 ecm
V7.5 on both.
Flashcan v2.
Scantool wont work unless tuner is open.
If i open scan tool, it is connected and shows various pids and dtc's but the dashboard and pids are dead, no live or historical data. Just min/max.
When i hit record the data files are empty.
I am trying to diagnose a mid rpm miss that is not throwing codes but i cant tead any sensors.
Any ideas?