Is the VCV responsible for anything important (besides EGR) on a 240D with a manual transmission? I've disconnected the EGR and thought of removing the VCV completely to store it safely indoors in the event that I need it for my second 240 with an auto transmission. Apart from plugging off unused vacuum forks, are there any special concerns involved in taking this off?

Keep the vacuum valve in a box somewhere as they some are no longer available.

Never read of anyone deleting it.

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84 300D, 82 Volvo 244Gl Diesel

You don't need it. Like Diesel911 said, do save it though as they are NLA.