Exhaust modification is one of the first things anyone does to thier car. It gives the car a nice sound and improves performance slightly. You can either get an axleback (muffler) or a catback (full exhaust). Exhaust is a pretty simple thing to modify, but thier are alot of choices out there, so make sure to research.
This is an example of a modified exhaust.
Specials
**New**
STi intercooler, new in box only $215.95. Great price for this usually expencive OEM part.