See this thread.
https://www.bimmerpost.com/forums/sh...php?p=28008378
I’m in the middle of this now. Removed charcoal cannister, secondary air pump, associated hoses and EGR valves and plugged the holes on the back of the engine with the plates from NRW Design. Just received hoses yesterday and a discriminator valve to build a new tank vent routing. I have an Epic tune to code out the CEL.
One unresolved question for me is what to do with the hose that runs from the charcoal cannister to the idle control valve on top of the engine (beneath the wiring harness). Do I plug it? That’s what I’ve done and car seems to run fine, but I’m only able to test drive it up and down my driveway.