Considering I got a great deal on my X (a $10,000 + car for $3,700) I'm not complaining. But it seems that my X has no REAL get-up-and-go. I can't pull my 4-wheeler w/o struggling. There must be more options for upgrades.

My friend has a 2004 f-150, and he gained noticeable HP and T by doing intake and exhaust mods, why can't I?