I don't actually know what these things are called, but after looking at the turbo, I am missing two. Could this be the source of my slow spool-up since it could be leaking exhaust gas out there instead of sealing up good against the hot-side housing? Anyone know where I can find replacement "plates" to put on there? It's a PTE 50 trim turbo and currently am hitting 20 psi at around 5500-6000 rpms.
