B-winged means it was sent to billy wing for tuning. Me personally i dont know how to tell if a dm was tuned by him. On my dye nt he modified the manifold. He also give a certificate with the marker once he has tuned it.
Billy wing bolt is the red bolt you show in the picture.
They are two different things. congrats on the dm9 and welcome back to the game.
bwinged is just as u have pictured. It has the red Billy Wing upgrade bolt. It's mainly hard anno and polished. The improvement was pretty unnoticeable compared to my broken in stock bolt when I had both a DM9 and DM10.