Originally Posted by dirtybird819
so does cafter market intake make a difference?
It doesn't really if you have nothing else. But if you have exhaust, headers and tuner then it will help a bit more. I had a K&N FIPK on my truck. I also have a Magnaflow catback exhaust and I felt a slight increase when I put the intake on. I took it off because I don't like the fact that it sucks in engine bay heat. The heat shield is a little better on the 04+ trucks because it actually bolts to the truck. The one I had was just kind of put on the tube. Here is a pic: