If you are happy with the power as it is, don't bother tuning or putting exhausts on. If you do want a quiet exhaust, go for a Jasma approved Japanese brand for a quality system.

I'd personally go a set of lowering springs (25mm max, the 'super low' 50mm will destroy your struts) and a cusco front and rear sway bar (or whiteline).

Add the sti side splitters and fog light covers to transform the front end looks.

Leave the tow bar for added stealth.

__________________
[COLOR="Gray"]550Nm off a 2L... Just wish it was in the dak dak...[/COLOR]