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Smg3 ecu is fairly different from the contemporary automatics. It’s much closer to the smg2 ecu in the e46 m3. C167 processor - fairly trivial to dump on the bench in ‘boot mode’ from what I recall. Also fairly trivial to defeat rsa via bench flash to make future obdii writes possible. Never figured out how to flash the initial bypass over obd, but didn’t put a ton of work into getting that to work.
I am hunting for an e60 m5 so perhaps could put some work into it if I find the right car. Though to be honest my primary goal is a DCT swap
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