Review on 🚀 K&N Cold Air Intake Kit: High Performance for 1999-2005 Ford (Excursion, F250/F350/F450/F550 Super Duty) 6.8L V10: Guaranteed Horsepower Boost: 50-State Legal: Model 57-2524-2 by David Encarnacion

the instructions were very helpful, there were no problems at all. audible difference in sound, didn't notice a huge increase in performance. cool update that you shouldn't be afraid to try. Problem: The instructions state that you must have a visible CARB exemption sticker to pass through the smog and it would be nice if they provided one! You're kidding, such a headache. I called k&n and the first thing the customer service rep asked was did you order this from amazon? I said yes and he said yes, we get a lot of complaints from our Amazon suppliers. Absolutely pathetic, now I had to happily email, fill out applications, provide photos of installation, proof of purchase, vehicle VIN, registration photo. All because Amazon sellers don't ship it! I would like to receive some kind of compensation for this, but I am sure that this will not happen. seller of your money