If you want to keep it uner warrenty, the only options you really have are:
Headers... AWR($375,499), Brosal($400) CAI... Injen($250),MHP($350) or short stack AEM($200)Cat back... Brosal($400),Skunk2($550),RacingBeat($495) With any solection of the 3, youll get to 150 np. Thats at the crank though... not the wheels. Also if you have the cash, Cams... Mazdaspeed ($150) for the intake and the FZ-ZE ($140), and with the cams maybe 165 at teh crank, and ive heard they can be under warrenty if installed by the dealer, but instal is exspensive. Good luck to ya!