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PCM Hammer Release 020
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@LegacyNsfw LegacyNsfw released this 28 Feb 06:16
· 168 commits to develop since this release
2022.02.27.01
6cc77a5

There are no changes to flashing, but there are significant improvements to data logging:

  • The app can now tell the PCM to send a stream of data, rather than requesting each row of data.
  • If you select an unsupported parameter, you'll get an error instead of just a bunch of zeros in the log.
  • If you select too many parameters, you'll get an error instead of just no logging. (in RC2)
  • With ELM devices, if you don't have enough parameters selected, you'll get an error message instead of erratic data rates.
  • If you change devices while logging, the app doesn't crash, and the parameter grid repopulates correctly.

There are improvements in other areas as well:

  • Support for more AVT devices, contributed by Antus.
  • Support for a new OBDX Pro VC device, contributed by Tazzi.
  • Support for command line parameters, contributed by Joukoy.
  • Better initialization of ELM devices, contributed by Gampy.
  • Depending on whether you've already done a test write or a full read, you'll either get a stern warning or a simple confirmation before you try to write to the flash.

Please don't make OS or calibration changes in your only car. This software has a pretty good track record so far, but if something goes wrong, it may be a while before you drive that car again.

That said, writing to flash memory is the only thing that can do any harm. Reading and data logging are perfectly safe.

How to get it:

  • If you're handy with computers, scroll down to the 'assets' section of this page, download the zip file, unzip all of the files into an empty directory, and run PcmHammer.exe or PcmLogger.exe. When the window appears, the first thing you'll need to do is select the device that you're using.

  • If you'd rather not deal with zip files, you can get the apps from the Windows app store - but note that the version on the Windows Store will not be updated until a couple days after the release is posted on GitHub and PcmHacking.net. This release is the "Beta" version for now, and it will be moved to the non-preview version a few people report that all is well. Just click the links below, and click the "Get" button on each page:

PCM Hammer: https://www.microsoft.com/en-us/p/pcm-hammer-beta/9ntmspjf27tk
PCM Logger: https://www.microsoft.com/en-us/p/pcm-logger-beta/9png38rdzntl

To test PCM Hammer, click Read Properties to confirm that you've selected the device correctly - it should print a few details about your PCM. Then try "Read Entire PCM" (it's in the Tools menu). And then, if you're feeling bold... and if you have a different car that you can use to drive to work... try writing the calibration or parameter blocks.

To test PCM Logger, select some parameters or open a log profile. Click the "record" button to save data to a file. The list of parameters we have so far is just the beginning, but it will take some work to figure out what we're missing. If you can help with that, please share at http://pcmhacking.net/ .

This project is still in its early stages. You may encounter bugs. The software may behave in strange ways. Please report such things to us so that we can fix them.

If anything goes wrong, please take detailed notes about the exact steps that you took, and please also copy the contents of the Debug tab and save it to a file. We'll need that to figure out what went wrong, how to fix it, and how to prevent it from happening to anyone else.

The developers can be reached by creating a new thread at pcmhacking.net:
https://pcmhacking.net/forums/viewforum.php?f=42

While we think it is just about impossible for this software to make your car unusable, please keep in mind that we're just a bunch of hobbyists who have been working on this stuff in our spare time. It's a miracle that we've gotten this far. If you need the guarantees that come with a commercial product, you should buy a commercial product.

Assets 3