Welcome, one of the first things you should do is install a Oil Catch Can, that will save your Manifold & the top of your Valves. You can do a CAI, FMIC, Catback Exhaust, Sway Bars & Lowering Springs or Coilovers ETC ETC. The only Mod that will kill your warranty is a ECU Flash. Every part you remove for a aftermarket part will not be covered under warranty but I would check with your dealership before install aftermarket parts because NOT alll dealerships are the same, some don't care if you mod your car & some are assholes.
Post some pictures when you get a chance.