Hi there! Sorry if this is in the wrong spot but im in need of some help, i have a 93 90 cs quattro 2.8 12v, and im having issues with misfiring at idle and sluggish acceleration with the engine cutting out.

The car is a recent purchase and i sorted out most of the vacuum issues i believe, smoke test came back good with no leaks, but there are these two pipes coming off the exhaust manifolds and i havent been able to find a diagram to see where they lead or what theyre for, the po just capped it off with these silicone plugs.

Ive checked the codes by jumping the two pins in the fuse panel and came back with 2 codes
2113- camshaft position sensor
2411- egr system

I was wondering if these two pipes coming from the manifolds were connected to the egr in any way? And if so a diagram would be very appreciated if anyone has one. As for the camshaft position sensor i have a new one on the way, i tried switching it with one i had from a 1997 a4 with the 2.8 12v and the code is still showing up so that one may be bad as well. Any help is appreciated. Thank you in advance20231201_101144.jpg20231201_101151.jpg20231201_101224.jpg

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