IF it still works, IF... then it may be locked into the last settings you had on the old head unit. I'd suggest you look for another PROPER e53 (not e39) head unit with DSP./

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I swear, my cars are like a girlfriend.
Sometimes its a rough ride, sometimes its smooth motorin'.
Sometimes she doesnt like how i treat her and sometimes i dont like how she behaves.
BUT at the end of the day, she loves it when I am inside her.

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'91 850i
'05 X5 4.4i
'09 Clubman S