Intake [which was a hassle to get in apparently even though I got it done] and a few other little things here and there. No room for a turbo so that's not an option, sadly.

Oh yea, and of course there's the stereo . JL W6v2 (not enough funds at the time for a W7) with a JL amp and a [shrug] entry level alpine deck doing all the treble [too cheap to buy another amp for just the treble in a car I plan on dumping within the next 3 years]. Crappy Kenwood speakers in there too.

It sounds decent; not good though.