Well homies,
Its been done... As far as I know, I just became the first 328d to go hybrid turbo. I was told by a few that it wouldn't be possible, and even some manufacturers of turbos in Europe said the same. I received the IHI Turbo (56mm) on Friday, installed Saturday, and just finished the tune/logging today.
Power band feels so much better as well as delivery of power. Let the wife drive it, and she said the car feels "lighter". I see what she means as it seems it doesn't feel as winded when getting on it.
Turbo was around $1k shipped via FexEx International. I have posted additional details in the BMW USA Diesels Group in Facebook. I definitely feel it was worth it overall!
https://staging.streamable.com/pg7hcu
https://staging.streamable.com/hi376x
Cheers and Stay Safe All