We were discussing
flashing Euro DME onto our US DME and the removal of "something" from the intake silencer, is part #2 & 4 in
https://www.etkbmw.com/bmw/EN/search...M4/USA/13_1612 that you refer to as the "charcoal filter" and that you remove completely?
EDIT: I am referencing above the air filter element, the "charcoal filter" that is discussed in this thread and removed by some cannot be easily found in ETK.