even with a cai the heat from the engine will warm up the air inside the intake regardless the only thing with a cai is it speeds up the process of the air entering the throttle body which dosent take as long as stock... and with better airflow entering the engine on a cool night when its 67 u can feel the difference but when its 100 outside unless u add one of those contraptions that cools the air entering the air intake the temp of the air will pretty much be +-10 degrees of the outside temp