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  1. Any interest in guide to doing ISTEP update yourself?

    I was able to do this after the update without any issues. Worked just as before
  2. Adding low tone horn through wheel well

    I was researching parts for doing this mod and wanted to do the cables in a proper way. I discovered that Bmw does offer a Y cable. Part number: 61129321298 From the pictures I saw the plugs should fit. I might give it a try and report if it works. This would be a very clean solution.
  3. (P)ark to (D)rive puts car in 2nd gear?

    This is a normal behaviour for the ZF8HP. Nothing to worry about. It also does this in stop and go traffic. But for this to happen, the car has to be up to operating temperature.
  4. No mod drop in door and behind seat speakers.

    I don't know if you are able to get these speakers where you are from but I had a great experience with ESX VXB8.3C. It's a set that includes door speakers and the subwoofer. They nearly had so much bass that I didn't even need an external subwoofer for my BMW. I powered them with the Match Up...
  5. Replace OEM Amp with Aftermarket Alpine DSP Amp

    It's a free improvement so I took the offer. I can only recommend it! An external amp will of course offer a better sound. But this goes into a rabbit hole.
  6. Replace OEM Amp with Aftermarket Alpine DSP Amp

    It's possible that your car already had the new update installed when it was delivered. Then it would make sense that you wouldn't notice a difference.
  7. Replace OEM Amp with Aftermarket Alpine DSP Amp

    If you go to the dealership and ask for an update because of the soundsystem they likely won't do it. However if you have issues with apple CarPlay they will do it for free most of the time. They will update every module in the car. The bass from the subwoofers seems more punchy because of...
  8. Replace OEM Amp with Aftermarket Alpine DSP Amp

    The update for the soundsystem was apparently released between November 2022 and July 2023. I guess it came with the July Update in 2023. https://www.supramkv.com/threads/any-interest-in-guide-to-doing-istep-update-yourself.13044/post-344496 My MJ 2023 car was updated a few weeks ago at the...
  9. Constant 12v power in the door...which wire?

    I had the same issue and thought the window switch would work. After digging for wiring diagrams, I found the solution. Behind the black weather seal is the electric motor for the window. Red/Yellow for 12V and Brown for Ground. I tapped into these wires to get my 12V for the ambient light.
  10. Replace OEM Amp with Aftermarket Alpine DSP Amp

    One thing to keep in mind when upgrading to the Match 10 with the SMDI is the loss of the spacial sound. Since the SDMI converts the sound into stereo, you won't be able to hear the parking sensor from the direction they are coming from. It was a drawback when I had this setup installed in my...


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