Some people in this forum have made their own cold air intake and it looks and works pretty good as far as I know. I purchased the kit along with the plug wires and ecm reprogramming. I'm happy with the results in greater power and better mileage. I could have put together a cold air intake of my own design that would have worked I'm sure but the time saved and knowing it was made to fit and work without hassle made it worth it to me to purchase. If you are handy at all and like to create your own modifications I would say go for it! But if you're not all that handy or not concerned about the expense of the kit then the kit is a quick and easy way to get more power. Good luck either way with your decision!
Steve & Nancy
2005 Itasca Sunrise 33', W20 Chassis, Ultrapower, Henderson Trac Bar
2012 Chevy Captiva Sport AWD, ReadyBrute Elite Tow Bar, Blue Ox Base Plate, Protect-A-Tow