I bought one not realizing I already had one. I removed one thinking it was OEM, and isntalled a GT2860R which I'm running now. Then I bought a X37 and once I recieved it I realized I already had one. I know it sounds sketch, but it's legit. From talking with Adam (Tune+) I think I want to go X47R instead of either the big turbo or X37. I hope that clears things up. BTW, I did post on this forum about having two X37's.