I installed mine myself and coded the RNS via Vagcom. There is no difference from factory fitted RNS. Seemless integration with MFD with direction as well. But as Mav said, the only difference is the shark fin antenna if its factory fitted. Any aftermarket ones will not have this except if you were to go through the trouble of replacing the antenna on the roof which is a major job. The GPS antenna tucked underneath the dash works well, no problems.
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