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Oh, so you got a E89 Z4 engine, the one that had the plastic valve cover. It also had a different ECU than the original 325/330. That's cool how you got it all working. I was kinda wanting to turn my e90 into a track day car a few years after I pay it off. With all the non-essential modules removed, does the ECU give you any issues or does it work fine with all the faults?
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