Any power mods for a 2.5rs impreza 2005?

[Ryderzy]

Im 16, and recently got a project car 2.5rs that we had to put a new engine in. I want to turbo it although it wont be a good idea due to the engine being an EJ253 (naturally aspirated). Though I want mo powa baby. I have considered cold air intakes, performance exhaust systems, and tunes. Although those are all extremely expensive. Any ideas for some performance mods to increase HP?

 

[Ecmbuster]

Subaru Tuning – HP Tuners

Explore HP Tuners' Subaru tuning support for models like the Impreza WRX, WRX STI, and Forester EJ25. View credit and licensing information.

www.hptuners.com