I'm currently running the setup in my sig and my car is in the shop right now. I was told that since I've got a 9lb pulley on there then I should have a good BOV or Bypass valve on it. Can someone reccomend a good BOV or Bypass valve? I would actually prefer something that is louder, I dont mind the extra attention. So the louder the better! Also where would a good place to mount it? I heard about driveability issues if mounted after vs. before the MAF.