First Off I am assuming that it is like an Injen intake (2 piece plumbing with intake
First off remove the stock air filter box and plumbing. The bolts that hold all the front box are a little tight to get to.
Remove the vaccum hoses and note the order they are in.
Lossen the hose clamp that is on the airbox/throttle body (use a screw driver or socket)
I would then jack the car up on the passenger front and remove the tire.
Then insert the little silicon tape like strap that goes around the hole for the CAI so it doesn't rattle (metal to metal conact)
I would take the smaller piping that fits in the wheel well and attact the silicon hose and hose camp on the end that will go from the engine bay to the well.
I would insert the piping section that piping into the fender and the piping will kinda follow the wheel well.
Then insert the cone filter with a hose clamp on it. This will be tight. Connect the filter the piping and use a screw driver to tighten.
Then take the longer piece and attach it to the silicon hose from the first piping piece using another hose clap.
Attach the longer to the throttle body with a silicon hose and clamp.
Reattach the vaccum lines.
I believe you have to plug the IAT sensor hole with a little plug supplied by the kit.
Here is a pic of my injen, hopefully it will help