I bought the Wizaired because of the data backing it up on ZZPs website. I bought a 9" K&N filter. The kit doesnt come with a filter. Like it was said the Wizaired blocks off all the engine compartment heat. I think they even had infared pics to support their product. They claim it is number one due to the fact it takes more into consideration than just flow. The links really explain why a CAI is so important.
I even cut my fender opening bigger. I love my box and glad I bought it. Woke the car up.![]()