For 2014+ BMW motors that have an (EWG) electronic wastegate. This add-on patch allows your JB4 to directly control your electronic wastegate raising the boost ceiling and tuning flexibility.
Additional information and directions are posted here: http://www.jb4tech.com
N55/B58/N20 BMW JB4 (EWG) Electronic Wastegate Add-on Connector install instructions
The new EWG harness has two long wires coming from it. Purple and blue. Each will have a gold DSUB pin which is to be inserted in the JB4 harness similar to how the FlexFuel connector is added. Put these wires inside the rubber wire grommet going to the large DB25 connector on the JB4.
3) The purple wire (going to the male pin on the wastegate harness) connects to position #9 on the DB25 connector. Carefully push in until it clicks.
4) The blue wire (going to the female pin on the wastegate harness) connects to position #16 on the DB25 connector. Carefully push in until it clicks.