From what I understand, it seems that Pumaspeed can't keep enough cores on hand and it's causing delays. Also, from what I was told, Customs is delaying the large shipments. A single turbo ordered direct from PS doesn't seem to trigger them, but large quantities of 15 or 20 OEM-looking turbos shipped to suppliers like Panda sets them off for some reason, and they hold them. I don't really know why.