I have checked my entire pitot and static systems for a blockage.
Went so far as disconnecting the pitot and static sources at the back of the display - still shows airspeed.

Is there a way to calibrate the zero-baseline? Although the numbers match the steam guages when I am actually flying - and I just did the homemade tests with the manometer and vacuum puller. System is tight.

Is there a way to tell the device - you're on the ground and not flying - in order to perform log retrievals? Getting system data is disabled when the unit thinks it is flying!