Remove the air intake hose, between your turbo and air filter. Look towards your turbo and just inside it. You will then see a plate-shaped piece of metal, that looks like the center was cut out. This is the silencer ring. It has a snap ring to hold it into place. To remove the snapring, use two small screwdrivers, start to lift one end, then slip the 2nd under it... work it til you get it removed.
Very Carefully! Do not slip and hit your turbo blades!