[caliwrxsun]

Hey whats up people, i am trying to find out what the blow off valve, you guys recomend to upgrade the stock on on my wrx, while i am concernd about sound, PERFORMANCE is most important to me , so i want to know what you folks recomend since i am new to wrx's and dont know much about them, and at the same time if anyone is getting rid of any parts let me know , i may get some parts off some you folks!