Yeh, there is a big air vent right above the air filter so the carbon hood would stop air flow and also because of the vents it may be a tight fit under there! Temp at the airflow sensor sits at about 100 at idle and then drop to about 70degs when moving so nice and cool. Need to try fitting the box again to see if there is a difference!
Doh, i can see the vents now in one of your pics