What Qsilver7 said about computer interface and software is 100% on target, I’ve found that even with the 01’ M3 I have its essential or you just get generic codes and no real time data. A cable and SW is a solid investment for sure!

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2013 X5 xDrive3.5i Premium
2002 530I Sport Package
2001 X5 4.4i
2001 M3