The airflow with the quad coils is quite a bit higher than with the octo coil. You can still get amazing flavor with them, though.
Try closing down the airflow on the tank itself. Try with the airflow ring in various positions and take "dry hits" (just inhale without firing the mod) until you have the airflow set to how you like it. Restricting the airflow a bit with the quad coils should (keyword "should") enhance the flavor you are getting with that tank.
