usualky means will scan brand specific codes. They don't usually say the phrase. Bi-directional means it will actually send commands to the car.
The NT520 is both 2nd level and bi-directional. (In addition to being able to send active commands like "roll down right front window, can also program idle speed etc).
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2011 E70 • N55 (me)
2012 E70 • N63 (wife)
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