I read in a prior post about removing the silencer from the plastic inlet tube between the air filter box and turbo. It works. I overhauled mine yesterday. Grind off the end ring on the inlet side as indicated by the arrows. Grind off enough plastic so you can see the seam between the outer tube and the inside baffle. Then tap out the baffle/silencer to remove it from the tube. There is also a plastic ring restriction on the outlet side to the tube once the baffle is removed. I cut this ring out with a jig saw. I can't tell yet if it helped on performance or an increase in turbo noise but at least the air has a clean flow to the turbo.