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There was a pretty important revision to the vanos system in August of 2017. The cams, sprockets, and valves were all changed due to issues in the early version. The injector part was also changed right around then. The early 2016 models or more prone to the injector failures, as mine was. The oil pressure sensor was reduced from M12 to M10, right around then as well. I don't know why I imagine due to the Vanos changes. The TU and Gen 2 changes are pretty well documented. But there are a few sneaky changes throughout just gen 1. If there are any more I will probably find them soon.
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