Routing the CCV to the pressurized portion of the intake tract is a no-go. Max boost is something like 13psi and you would not want to subject your crankcase to that. The engine management computer watches for a corresponding drop in flow across the MAF when it signals the EGR to open. To fool it, you need an electronic device to simulate that change in airflow. That's what the Epsilonian device used on TDI's does. So all you need is someone with the gumption to adapt it to the MB.

That said, the E300 manifold simply does not clog like the TDI does. I've owned mine since new and put 127000 miles on it, and the manifold has only been cleaned once. So it's not really worth the effort to do anything about the EGR.

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Rick Miley
2014 Tesla Model S
2018 Tesla Model 3
2017 Nissan LEAF
Former MB: 99 E300, 86 190E 2.3, 87 300E, 80 240D, 82 204D Euro
Chain Elongation References