Silencer ring
#21
#23
i would guess that its spinning fast enough to be a high enough pitch that you just cant hear it over the truck itself. when i get into higher rpms my turbo gets to where you cant hardly hear it. the open turbo is just till i get new one. when i get something nice i will put a filter on it. just trying to enjoy it while running the stocker, besides a few guys down here are running open turbos and still doing fine. so far i have 20,000 miles on the open turbo and no problems with end play or bearing wear...
#26
#28