I have a Roush phase 2 supercharger on my CS and I'm looking for more whine. I already have the Roush CAI which helps a lot as well as the 85mm pulley. I know you can change pulleys and that will make it louder but I found a video on YouTube of someone with an M90 and having silencer holes from Roush. Does the TVS have this and if so how do you get to them ?