Search button can help you out , but you can run 18 19 20 21 22 psi that will give you boost cuts which is fun some how
![Smile](./images/smilies/smile.gif)
or just get a AMECU and get it tuned would be a better alternative.
http://www.perth-wrx.com/vb/sale/11817-fs-various-subaru-parts.html