Hello Richard,
I sent you an email about a month ago but haven't received a reply so I'm posting on this forum.
I have a 2011 BMW 335i with N55 PWG engine and I've got a few questions for you:
https://youtu.be/EutKQbGr0cc
When the CEL jumper is set to DR1, the controller board makes a loud buzzing noise as soon as I insert the key.
The noise won't stop until pulling out the jumper from DR1.
I would like to know if this is normal. Everything else works fine if I set it to DR0.