I actually just removed mine from my car since I went a different route and it is currently for sale. It has the stage 1 tune on it and came off my '17 m240.
It's actually pretty easy to install yourself, I could walk you through it if need be. You basically plug in about 4 sensors and just run the wires underneath the engine cover.
All pretty tidy and only requires zip ties and a torx bit (don't recall the size) for the ground and the positive.
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