Review on High Performance K&N Cold Air Intake Kit: Guaranteed Horsepower Boost for 2018-2019 FORD Mustang, Model 57-2606 by Chris Wilson

It has higher airflow than the original intake, but definitely does not draw in cold air. Air entering this K&N intake draws hot engine air from the engine compartment. It has a heat shield but does not protect the hot air in front of the cone filter. The OEM air intake has a closed tube that pulls cold air directly out of the Mustang's grille. This K&N technique is almost completely open and that is what it lacks. I feel more power with the K&N mount when the ambient temperature is between 20 and 30 degrees Fahrenheit. On warmer days my strength seems really lower to me because the air that comes in is actually very hot. I paid very close attention to the intake air temperature sensor and compared the temperature to the stock and K&N. At K&N, I have seen intake temperatures that are 50 and even 60 degrees Fahrenheit HIGHER than the outside ambient temperature because the air is being drawn in directly from the engine compartment. The K&N brings a little more power on very cold days and improves the sound of the turbo. Overall I prefer the stock air intake as it can pull cooler air out of the bumper grille. I reinstalled the stock air intake and will keep it in place of the K&N. There's Roush, which also has plenty of airflow but is fully enclosed and pulls cold air through the grill, but costs $100-150 more than K&N. There are also a few other brands that are closed to avoid hot air being sucked out of the engine compartment.