I have a hahn TD06 big 16g that works perfect. This is the real deal not a Chinese ebay turbo. This turbo spools to 8 psi @ 4300 rpms on my 1300cc hayabusa and is good to 350 rwhp. I am trying to sell it while my motor is getting beefed up (450hp is my goal). I would consider a trade for a t3/t4 57- trim with a .63 hot side. If it does not sell it's going right back on my bike. Call me @ 904 703 9015. $250 obo.