Yeah, here are some links
Psinuse helps alot, and Ill answer any questions that I can.
Hello, I also am the proud owner of a 02 WRX and like yourself i am in need of help with open source tuning. Have you nailed down what is needed to tune your car yet? I don't wish to be a bother but i noticed our cars are nearly identical and see that your in the process already so i figured you may be able to share your knowledge and help save me a lot of trouble. Would you mind sharing what you have learned with me?