get weapon R headers and run a custom straight pipe no cat. apexi power fc if u wana be street legal 2.5" custom mandrel bent exhaust. port your headers they give best gains for a 2zz u can try bore out ur throttle body not 100" sure on the gains but if u have money buy the trial throttle body apexi pfc FI route, blitz compressor, greddy supercharger, c2 turbo kit lol :P or get a turbo car =D 2zz sucks lol and steven dont forget that 180's are powerd by a power making machene sr20det turbo gets gains so easily compared to us.