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      03-11-2023, 10:59 PM   #1
SalmanF
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2020 tuning questions

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Hello, I just purchased a CPO 2020 M340i Production date 19/11, Do i need a bench unlock? i specifically told the dealer to not update anything but it might’ve been updated previously. How do i find out if i need a bench unlock or if i can just flash a tune on?

I also still have warranty i know tuning voids the warranty but is that specifically for engine repairs or all repairs in general?

Thanks in advance for any responses!
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      03-12-2023, 05:19 AM   #2
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You could download the MHD app, connect it to the car and do the "Check unlock status".
It´ll tell you what unlock is necessary.
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      03-12-2023, 02:50 PM   #3
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It works only if you have an MHD adapter, I wanted to test with my MX+ it does not work, and the adapters are also +- 89€, unfortunately
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      03-13-2023, 03:39 AM   #4
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Quote:
Originally Posted by Davg31 View Post
It works only if you have an MHD adapter, I wanted to test with my MX+ it does not work, and the adapters are also +- 89€, unfortunately
That´s not correct.
MHD also works with the ENETv2 cable and an Ethernet adapter for your phone.
Belkin lightning for iOS or any USB-C Ethernet for Android.
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      03-13-2023, 12:28 PM   #5
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Thank you for your answer, I just ordered the adapter to test this, thanks to you

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      03-13-2023, 10:30 PM   #6
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It's really annoying that MHD docs say it only works with their adaptor, but it actually works with the cheap wired adaptors.

Found this out the hard way when I had a wired adaptor, followed the instructions and bought their adaptor, it didn't work, and then I tried the wired adaptor and it worked.
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      03-14-2023, 06:37 AM   #7
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Quote:
Originally Posted by abbike18 View Post
It's really annoying that MHD docs say it only works with their adaptor, but it actually works with the cheap wired adaptors.
I´m not sure what docs you mean because the website clearly says what options are available.
https://mhdtuning.com/pages/instructions
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      03-14-2023, 08:04 AM   #8
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Quote:
Originally Posted by MichaelNRW View Post
I´m not sure what docs you mean because the website clearly says what options are available.
https://mhdtuning.com/pages/instructions
ENET plus OTG works on Android too
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      03-14-2023, 03:50 PM   #9
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I just tested with a wired adapter from Amazon and I have this message, I do not understand
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      03-14-2023, 05:19 PM   #10
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Quote:
Originally Posted by Davg31 View Post
I just tested with a wired adapter from Amazon and I have this message, I do not understand
I could be wrong, but it looks like you will need to pull the ECU and have it unlocked by the few companies who do it. After that, you will be able to tune it. The warning seems to let you know if nothing appears, then you can assume it is unlocked?

I'm interested as well and my MHD will arrive Thursday. I am hoping for an unlocked ECU as I have a 7/2019 production build date. We'll see what my ECU date is though.
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      03-14-2023, 05:28 PM   #11
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What is strange is that everyone says from 07/2020 and I say 03/2020
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      03-14-2023, 05:29 PM   #12
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Quote:
Originally Posted by Davg31 View Post
What is strange is that everyone says from 07/2020 and I say 03/2020
I've seen that many times as well. I hope someone may have an answer for you. I'll post my results once I have them.

Last edited by RigRag93; 03-14-2023 at 05:48 PM..
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