09-07-2022, 06:18 PM | #1 |
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New car has existing tune, what steps to use BM3
The title says it all...new car will have an unknown tune and I will be making mods and adding a tune I can access, either MHD or BM3.
Does the computer need to go back to an OEM tune via the dealer or is there another way to do this? ![]() |
09-07-2022, 07:32 PM | #2 |
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For MHD when you first install, it should save your current tune, so it just means you wont be able to revert to stock, you could only revert to that original tune that came on the car. In either case you should be able to overwrite whatever is currently on there with MHD or BM3 tune.
EDIT: I see you are in California, so having a copy of the stock tune might be important. Not sure how old the car is, but it would need stock tune to pass SMOG check, presumably before the car can be sold to you? |
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09-07-2022, 09:33 PM | #3 | |
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09-07-2022, 11:05 PM | #4 | |
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09-07-2022, 11:08 PM | #5 |
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09-08-2022, 07:39 AM | #6 |
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09-08-2022, 09:14 AM | #7 |
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I recommend you reach out to BM3 and check if their tune is on your car.
Then based on that answer, they let you know if they can overwrite the existing map and what will happen to the custom map on the car now.
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09-08-2022, 09:53 AM | #8 |
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Don't have the car yet...can they tell from the vin? Thanks for the suggestion.
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09-08-2022, 10:02 AM | #9 |
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09-08-2022, 10:03 AM | #10 |
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They should be able to, yes
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09-08-2022, 11:41 AM | #11 | |
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This "stock tune" label causes confusion because guys dream up all kinds of false things like that BM3 actually has a library of factory stock tunes, etc. Wrong! It's only saving whatever tune it saw on the car when you first installed BM3. My car came with the MPPK tune when I bought it so that's what Bootmod3 saved and labeled my "stock tune" Later I actually wanted to do some comparison testing beginning with the stock factory tune (which I never had since I bought my car used) So I contacted Bootmod3 technical support. They put together a tune for me that contained the stock parameters that would have come with my car from the factory. But it also had the BM3 section that allowed me to set my upgraded Dorch HPFP, etc. They just dropped it into the MyMaps menu on my car's Bootmod3 account. So I could flash this Bootmod3 simulated factory stock map. Then I could flash the MPPK tune that Bootmod3 had originally saved for me and labeled "stock tune". Then I could flash any other Bootmod3 map for my car. Hope this helps! |
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09-08-2022, 11:45 AM | #12 |
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As the subsequent posts have stated above, when you first install MHD or BM3, it just saves whatever is on the car, so when you flash back to "stock", you flash back to that original tune. I can't comment as to whether BM3 or MHD would be able to give you a 100% OEM software for the purposes of passing California SMOG, so that might be something you need to go to the dealer or another DME coder to handle.
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09-08-2022, 08:41 PM | #13 | |
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09-08-2022, 09:07 PM | #14 | |
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09-05-2024, 04:17 AM | #15 | |
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09-05-2024, 04:22 AM | #16 | |
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09-05-2024, 08:27 AM | #17 | |
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You need to buy the Bootmod3 license. Then it’s your choice how you connect your hardware device such as a laptop or smartphone to your car’s OBD port, either by cable or by wifi adapter |
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09-09-2024, 04:39 PM | #18 |
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Old thread but thanks, everyone. I Ended up with a different car with a different problem...2021 M2C. It's likely a locked DME, however, the BM3 support function didn't say " bench unlock only" it shows the normal screen for a typical license.
Last edited by SoCalM235iR; 09-09-2024 at 04:48 PM.. |
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02-02-2025, 07:52 AM | #19 | |
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The previous owner has sent the 'email' to support@protuningfreaks.com with his email used to register the license and the VIN to transfer the license to me but there has been no response. I would like to know what tunes I have on the car and make my own changes. I don't want to buy a new license, and it save one of the OTS tunes as the stock tune, I want to flash it back to stock. T |
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02-03-2025, 07:04 PM | #20 | |
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