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Hi guys, I'm back working on this again have sometimes this weekend. I have 2008 135i with CCC, factory logic 7 amp getting replaced with top hifi with dsp amplifier from 2017 bmw 650/m6, everything was plug and play except I had to jump pin 1 and 2 to get it powered on. Coded the vehicle from 677 to 677 then to 752, has no sound any ideas?
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