Review on K&N Cold Air Intake Kit: Enhance Performance, Boost Horsepower: 50-State Legal: Fits 2005-2006 FORD (Mustang GT)57-2565 by Alex Jain

I love the quality, sound and performance they have brought to my Mustang GT. It took my airflow sensor/computer a minute to adjust. After slowing down, the idle was very low at 500 rpm. I even removed the negative terminal and reconfigured several times. At least that's how it was for the first few days and then it adjusted itself to the airflow. Gas mileage increased by 4 mpg! 26mpg or better!