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BMW 3-Series (E90 E92) Forum
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Does it matter what COM port I use?
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09-09-2019, 05:26 PM | #1 |
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Does it matter what COM port I use?
This is likely a dumb question but I honestly don't know the answer. My assumption is no.
I purchased Rhinegold ISTA + a couple of years ago before the vendor disappeared. The software setup for that put the K-DCAN cable on COM Port 9. I then downloaded BMW Tools and found I had to switch that over from COM 1 to COM 9 to get everything to play nicely together. The K-DCAN cable that came with the software died so I ordered one from BimmerGeeks. I went to try and use it and it wouldn't read. I switched it from COM 3 to COM 9 and all seems to be well now. Does it actually matter what COM port I use as long as everything is set to the same thing? PS I now know that I could have likely downloaded ISTA+ for free even back then. Live and learn I suppose.....doh |
09-09-2019, 05:31 PM | #2 |
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No, it really doesn't. As long as your cable is physically assigned the same port that the BMW software is configured to.
Make sure to set the latency of the port to 1 (or whatever it's called, it defaults to 16 which messes up the signal). Last edited by hassmaschine; 09-11-2019 at 09:20 AM.. |
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09-11-2019, 04:10 AM | #5 |
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+1, but for the sake of accuracy, latency is set to 1.
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