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      11-06-2019, 12:15 PM   #45
Zygote55
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Quote:
Originally Posted by MattH View Post

As I reported here, I failed the first go around with the smog referee because the software security checksum codes didn't match the factory BMW code.
I have to take my 2011 135i to a STAR station in the next couple of months. I've been running MHD, but uninstalled it to prepare for the SMOG test. I noticed that after uninstalling MHD and checking for codes it displays the checksums... which don't match. I'm concerned that I'm going to run into the same issue as you. Has anybody actually had recent luck uninstalling a tune and passing SMOG?
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      11-06-2019, 01:23 PM   #46
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Quote:
Originally Posted by Zygote55 View Post
I have to take my 2011 135i to a STAR station in the next couple of months. I've been running MHD, but uninstalled it to prepare for the SMOG test. I noticed that after uninstalling MHD and checking for codes it displays the checksums... which don't match. I'm concerned that I'm going to run into the same issue as you. Has anybody actually had recent luck uninstalling a tune and passing SMOG?
Did you uninstall and install the tune you originally backed up? I have a theory the issue is because the original backed up tune isn't being used and instead a "stock" tune provided by MHD is being used (somebody else mentioned this might be the issue somewhere as well).
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      11-06-2019, 06:05 PM   #47
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Originally Posted by dtla1 View Post
Did you uninstall and install the tune you originally backed up? I have a theory the issue is because the original backed up tune isn't being used and instead a "stock" tune provided by MHD is being used (somebody else mentioned this might be the issue somewhere as well).
I'm not even sure how to do that... Doesn't it automatically back up your stock tune when you install MHD? My understanding was that the stock tune was backed up when MHD is installed, then restored when MHD is uninstalled.

This raises another question I hadn't considered - where is it actually storing the stock tune? I've changed phones since originally installing MHD so it's likely I've lost my stock tune forever.
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      11-06-2019, 06:25 PM   #48
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Originally Posted by Zygote55 View Post
I'm not even sure how to do that... Doesn't it automatically back up your stock tune when you install MHD? My understanding was that the stock tune was backed up when MHD is installed, then restored when MHD is uninstalled.

This raises another question I hadn't considered - where is it actually storing the stock tune? I've changed phones since originally installing MHD so it's likely I've lost my stock tune forever.
I would assume that it's stored on the hardware that was used to backup the stock tune originally, especially since their instructions are to have the tablet/phone etc in airplane mode while using MHD.

Saying that, this might explain why you are seeing the checksums that don't match.

I'm going to revert to stock tune this afternoon to check since I've only ever had one device I've used with MHD.

Are the checksums automatically shown after checking for codes?
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      11-06-2019, 07:07 PM   #49
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Quote:
Originally Posted by Zygote55 View Post
I have to take my 2011 135i to a STAR station in the next couple of months. I've been running MHD, but uninstalled it to prepare for the SMOG test. I noticed that after uninstalling MHD and checking for codes it displays the checksums... which don't match. I'm concerned that I'm going to run into the same issue as you. Has anybody actually had recent luck uninstalling a tune and passing SMOG?
Seems like wee need to reach out to MHD Tuning or Twisted Tuning
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      11-07-2019, 03:57 PM   #50
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I made a post in the MHD 1 series thread. Hopefully we get a response there.
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      11-08-2019, 11:32 AM   #51
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Originally Posted by houtan View Post
I made a post in the MHD 1 series thread. Hopefully we get a response there.
Thanks.

Here's a screenshot from MHD. You can see the "Factory software" and "Current software" when you check for codes. I assume these are supposed to match and they don't because I uninstalled MHD from a different device than I originally installed it with.
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      11-08-2019, 01:16 PM   #52
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Can you please post this on the e90post MHD thread? That’s the only way to get a response. Or anyone that has ran into this issue, that is the best place to get this answered. I would do it but the issue hasn’t occurred for me so I am not the best person to articulate what happened.
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      Yesterday, 03:23 PM   #53
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Update: I had no issue passing SMOG with the mismatched software numbers.
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      Yesterday, 04:12 PM   #54
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Update: I had no issue passing SMOG with the mismatched software numbers.
Wow, ok so that theory is probably out. Damn.
We need to get someone in here that actually administers these tests to try to make sense of what's going on.
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      Yesterday, 06:57 PM   #55
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Wow, ok so that theory is probably out. Damn.
We need to get someone in here that actually administers these tests to try to make sense of what's going on.
Or, more likely, the guy who started this thread isn't being completely honest and he failed for normal, legitimate reasons like visual inspection, emissions not in readiness state, etc.
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      Yesterday, 07:54 PM   #56
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Quote:
Originally Posted by Zygote55 View Post
Or, more likely, the guy who started this thread isn't being completely honest and he failed for normal, legitimate reasons like visual inspection, emissions not in readiness state, etc.
Two more people chimed in that they ran into the same problem though.
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      Today, 01:19 PM   #57
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Quote:
Originally Posted by Zygote55 View Post
Or, more likely, the guy who started this thread isn't being completely honest and he failed for normal, legitimate reasons like visual inspection, emissions not in readiness state, etc.
Zygote, what am I not being honest about? I posted everything that happened plus a retrospect of where I went wrong. Maybe re-read this thread before you call me dishonest.

Like I made this all up to be without my car for two and half months, pay extra $1800 for smog test? Seriously, what is your theory on my motivation for posting this? I need attention or something? Think first, then post, it's pretty easy.
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      Today, 01:23 PM   #58
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Originally Posted by MattH View Post
Zygote, what am I not being honest about? I posted everything that happened plus a retrospect of where I went wrong. Maybe re-read this thread before you call me dishonest.

Like I made this all up to be without my car for two and half months, pay extra $1800 for smog test? Seriously, what is your theory on my motivation for posting this? I need attention or something? Think first, then post, it's pretty easy.
...and...and what I haven't told you yet: The new Wagner catted DP is now throwing CEL codes. So I am far from this being over and settled. Glad I made all this up tho.
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