I removed the Urban Cooling cover the other day and noticed that the injector fuel feed hose protective sleeve has been chaffing on the shroud bottom edge, see photo. It was through the sleeve and just marking the hose inside. I have heard of this happening on other M3W's, one found when the hose had worn through and caused a leak. I filed some of the plastic cover away and cable tied the hoses more to improve clearance. Worth a check if you are in that area.
