Bought my 2004 WRX about a month ago with 68k miles. Been working on my research. Over the past 4 weeks I've installed catless DP and custom 3" exhaust, which I hope to replace with a good catback some day soon. I ordered a grimmspeed uppipe today, so that should be installed soon. Bought a Cobb AP and have stage 2 running. Car came with a HKS intake as well.
So originally I thought if i liked my wrx, instead of throwing money into it I would just upgrade to an STI down the road, instead of having to stop at the roughly 300hp before the engine internals need replaced (this is what i've gathered so far). Anyhow, now that I'm starting to really fall in love with my little car, I'm thinking i want to push this engine before I dive into an STI.
Basics of what I want to add to car
650cc injectors - Do i need to go bigger? Will a pair of used pinks suffice for a 300awhp build?
255lph walbro fuel pump - Already bought with install kit for wrx
Larger Turbo - Is 16g enough? Is there a good used STI turbo that bolts on directly? I get confused with the VF and TDs. Any reccomendations welcome
TMIC - Not looking to go FMIC, So a larger core. Used STI, or anything decently priced. Can't see myself paying $800+
Anything I am missing that is essential to a 2.0L Build?