Mods mods what mods???

Todate I have the following: Aem Cold air Intake, Greddy Exhaust, Comptech Headers and High Flow Cat. What else can I do to my ride to get more speed out of it. plugs? pulleys? I want to stay away from waranty breaking mods. Just baught the thing... 2002 accord v6 3.0 vtec. sticker said 200hp stock so im very exited to work with this thing.