K-line was used until 2007/03 manufactured e90 e91 and e87
then it was removed and switch to D-CAN on different pins
so you need to clarify when you car is manufactured
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E81 2007 130i 6cylinder Montego blue
Retrofits: Harman Kardon, High-beam assistant, Removable tow hitch. Auto-dim folding exterior mirrors. Lumbar support. Perfomance Brakes.
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