as others have said, decent exhaust - personally would look at orbisound,benR's yozzasport, i know theres another but cant remember what its called. ITG Maxogen for induction kit, or just an ITG panel filter. Custom remap, smt6, dastek unichip, i think yozzasprt can offer a custom remap on the original ecu so that could be worth a look. Also BenR's inlet manifold work is worth looking at, quite a cheap modification for the gains and is a good place to start.