Unless you are looking for a different look or as much HP as possible, KN Filters are a more then adequate.

If you get a CAI then you lose the stock engine cover which is one of the biggest downfalls. The difference in HP is related to less turbulence and lower IAT. We saw IAT between 75-82 with our CAI, our Airbox with KN was more around 120 mark.

The filters will without a doubt give you a HP increase, just not as much as the CAI.

It's more of a personal preference when you're talking about that little of a HP difference.

Anthony
TVT Design