hi guys i have a e36 99 digital climate. on full power doesnt seem that powerful through vents even tho motor is spinning fast cud this be my pollen filter? air onli seems to be loop warm aswell not hot and doesnt seem to make much difference where i direct the airflow its bin like this since ive had the car now bout 4 months but i hurd it cud be a sinple pollen filter causing this problem am i right?