Originally Posted by Soccerluvr4
All CAIs will give mostly the same gains, there is just + or - a few with each one so it is mostly personal preference and price... So if you wan to spend an extra $100 for 3 more HP then it's all up to you.
That depends on how much further he's going to go with the mods. If he decides to upgrade exhaust and fuel pump and a few other things then really tune it to push a lot more gas into the cylinder then he's going to want to be able to suck in the most air possible.
More air = More room for gas vapors = More HP
So he might want the one with the fattest intake he can find. In that case he may want to spend the extra 100 or so. One may only add a few HP over another, now, as the car is presumably stock. However, a few mods down the line the extra air available could turn from an extra 2 or 3 HP to an extra 15 or 20 HP.