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

The only difference I noticed first was the sound which is great. I didn't notice a huge change in performance initially, but after about a week I noticed a noticeable increase in performance. I suspect that the computer needs time to adjust to the airflow. It's hard to say about the mileage because I don't follow it very closely, but it also seems to be a bit better. Spent money but I would say it was definitely worth it. If you're looking for fast and relatively cheap power, this is definitely a good option. I will say that the installation turned out to be a bit more difficult than I expected, but not that bad. It took just over two hours and I honestly enjoyed the process.