DYN airflow goes to ZERO mid pull

[itsdaveonline]

e67, should be running OL SD.

At about 4min 9 sec into the datalog you'll see dyn airflow goes to zero. Also noticing airflow calc mode goes from normal > high speed. You'll see previous pulls where airflow calc mode changes yet dyn airflow shows a value.

Im guessing it tried to use MAF but its failed in a funny state ?

thanks