Originally Posted by RobBeck
The word is that those are increased in ID at the inlet and outlet. I believe the inlet ID was specified and was quite and increase, the outlet ID (at the turbo inlet) was specified to be increased as well but a specific measurement was not provided. If that ID was increased sufficiently, then would be a great part to buy. If not, then total waste. From appearance alone it appears there was some significant increase so all should be well.
It is difficult to say from the photo. If you have an extra inlet tube you could look at your piece and the pic and try to guesstimate if the outlet id is larger than stock. Since nobody has measured / reported the diameter, I'm afraid it is not increased.