Hello everyone!

Need help with the port injection wiring on my 11 535 F10. According to everything I can find, I am supposed to wire the (yellow/black) wire of the controller to pin 9 of the OBD2 port to be able to obtain tach/rpm signal so that the controller knows what RPM we are at, but I get no signal at all when checking inputs with the R4 software. Green wire to yellow wire on TMAP works properly as i can see the boost pressure fluctuating.

Is there anyone out there who can help in giving some suggestions what to do next?

Is there another wire/place I can get RPM signal from?

Any advise would be appreciated.

TIA - Jay