Don't expect a lot of noise. Go for the AP intake if you want lots of whoosh.
There isn't much power increase for any of these intakes. Nothing you'd feel. Consider it more of an assistant to the parts that matter. I.e. downpipe.
The CF intake is damn sexy though. Gives you bragging rights. You'll be looking for excuses to open the hood.
Look for a used one and you'll find a good deal. Don't be bamboozled into buying new. Unless you don't like money
