They have used past warranty claims and they are replacing components that were involved in those claims. I took mine in and they had to replace only three items in the campaign as the rest were already replaced. Care to guess why, because they had issues earlier one and were replaced already. The HPFP and injectors were done previously. So they just needed to do the MAFS, low fuel pressure line, some crankcase lines plus a few seals.

So I really wouldn't call it a shotgun approach. Before it went in I was getting a CEL and engine malfunction messages. So everything but the timing chain has been replaced at some point.