SubaruHondaMazda

Hey all! I've owned a 2006 Legacy spec b for about a year now and just got done doing a few mods and I love it even more. I was wondering what other mods that are out there where I can get even more HP and or Torque... Because I am the president of the more money than brains club I'll try to describe what has been done as best I can... STI short ram air intake... Cobb exhaust... Access port installed... Swaped out "up pipe"... A turbo blow valve... I don't want to make the car any louder and I don't want to compromise the reliability of the car. Any suggestions? Thanks Sean.