Not sure how to connect your boost pipe to the stock intake manifold on your OM606?
 
Our billet aluminum adapter bolts right up and allows you to connect a 2.5" silicone coupling.
 
Comes with two threaded ports for 1/8 NPT fittings to connect a boost gauge, MAP sensor, ALDA, etc...
 
Notice that this is installed where your EGR would normally go. Be sure your build and local laws don't require an EGR.