[Raceboy]

Originally Posted by drmatera

twins would cost much more due to the added fab work involved in making it all fit. I considered twins on my 930 till I realized the amount of work it would take

If it is custom anyway, then there is only minor difference. Of course, I am talking from the DIY-er perspective, obviously having it all made will cost some significant money but that applies to single turbo also.

And you don't need extra BOV. Why would one run separate banks at all after compressors? I personally will use only one wastegate also for two turbos to eliminate syncing problems between turbos.