If you want to do a simple performance upgrade to your car or truck, an intake is the easiest way to go. What do I recommend? That would be the good ole boys over at K&N. I have one on my truck and have no complaints and I have never heard any complaints from anyone else. Now I've heard rumors that the oil they use in their wire filter is not good for your engine (especially on turboed engines or anything not naturally aspirated). From a lot of diesel forums I've heard that it lets way to much dust in and it will clog your turbo.....i call BS. I can believe this to an extent but I do not think it that it will ruin your turbo, I use this intake and a lot of my friends and family use it and many of my friends and family use them, I don't think any of their turbos have blown up yet. K&N makes a wide variety of systems for just about every make and model. They are also pretty moderately priced and i would recommend them to anyone for a simple performance upgrade that just about anyone can do by themselves.