Originally Posted by sixto

First off, what car do you have? Sounds like you have a 90-91 300D 2.5. First thing, there's no substitute to knowing what you're doing so do yourself the favor of reading through this thread - Wastegate actuator swap for OM602.962? - as many times as it takes. As for a vacuum diagram, this one's hard to read but should apply to your car -



There's a bigger version of the diagram in this post but it's marked up -

Wastegate actuator swap for OM602.962?

The electronics (EDS) won't care that you swapped in a pressure wastegate actuator so you don't need the MAP sensor (item B5/1) or the line leading to it. You need the line from the manifold to the ALDA (item 103) that goes through the overboost valve (item Y30). If you keep the BFS (item 123), keep all its attachments including the branch from the ALDA. I don't know if the second feed to the reservoir is necessary. My guess is it allows the reservoir to feed the emissions devices. I would cap the entire feed to the right side of the car as already mentioned, then take the additional step of capping the line to the reservoir as close to the reservoir as possible. You have to remove the fender liner around the right front wheel to get to the reservoir so maybe cap the line in the engine bay beyond the pair of splitters about where the fine green arrow is in the diagram.

Sixto
MB-less