Open source tuning for MazdaSpeed - SpeedLink

[murphys_law]

10-21-2026

I decided to make the software all in one, Logger, Editor, Flasher.

GitHub - mrphyslaw/SpeedLink: Open-source Mazdaspeed/MPS ROM reader, editor and logger. Windows Workbench alpha with 2D/3D maps, CSV logs and verified backups; ECU programming disabled.

Open-source Mazdaspeed/MPS ROM reader, editor and logger. Windows Workbench alpha with 2D/3D maps, CSV logs and verified backups; ECU programming disabled. - mrphyslaw/SpeedLink

github.com

10-19-2026
Editing this for a quick update. I've made a lot of progress the last few days. 7 definitions are in the github, I've also got a logger and dumper that works with both the vlinker fs and tactrix devices. LOTSSSS of definition tables for the 7 ROMS so far.


New here, not new to cars or ECU/tuning stuffs. I got a bug and decided to start working on ecu definitions for this platform for RomRaider. I've got one up so far, but will probably start adding more as I collect them and get time. This first definition is only for a stock rom file speed 6 (no 2 step, big load maps, map switching, or any mods, yet)

I thought I would pop in and put up a post on it, just in case there are any geeks like me around here that enjoy ECU reverse engineering and disassembly.

Anyways, github is here: https://github.com/mrphyslaw/MazdaSpeedDefs

 

[murphys_law]

Just added another Speed 6 definition file. The goal will be to get a smattering of 3/6 roms supported in RomRaider for editing and then build a flasher/logger(I've already started) to enable open source tuning round trip. Hardware support so far will be tactrix devices, and the vLinker FS, because that's what I have access to. This ROM set/ECU is pretty cool because it has a robust OBD ECU recovery, unlike some of the Nissan stuff I've worked with in the past. Much easier to fix a bad flash via OBD than having to solder a bunch of wires and build a circuit to put the ECU in recovery mode.

 

[murphys_law]

Anndddd one more post for today since I'm in the zone on this at the moment. This is going to be the flasher/logger. Currently its python, as that was easiest to get a quick working prototype, but I'm going to convert it to C#/.net. Its got support the vLinker FS as of now and only dumps. It will correct checksums and do a read verification as well. I wanted to get it out in the wild and see if anyone wants to test, and the safest way to do that was dump only, for now.

GitHub - mrphyslaw/SpeedLink: Open-source Mazdaspeed/MPS ROM reader, editor and logger. Windows Workbench alpha with 2D/3D maps, CSV logs and verified backups; ECU programming disabled.

Open-source Mazdaspeed/MPS ROM reader, editor and logger. Windows Workbench alpha with 2D/3D maps, CSV logs and verified backups; ECU programming disabled. - mrphyslaw/SpeedLink

github.com

 

[brandon19]

This is really interesting, and I'm glad someone is taking this approach with these cars.

I'm not too familiar with open-source tuning, but I'd love to see what this could eventually make possible for the MPS platform. Having the ability to not rely on a proprietary tuning software would be awesome.

I'm based in Australia and have access to all the MPS models, so if you need anything from them I could potentially help out.

Keen to see where this project goes.

 

[murphys_law]

This is really interesting, and I'm glad someone is taking this approach with these cars.

I'm not too familiar with open-source tuning, but I'd love to see what this could eventually make possible for the MPS platform. Having the ability to not rely on a proprietary tuning software would be awesome.

I'm based in Australia and have access to all the MPS models, so if you need anything from them I could potentially help out.

Keen to see where this project goes.

At this point collecting ROM files to create definitions would be the goal. I've got 7 defined so far, but there are more. I've decided that I don't love editing ROMS with Rom Raider as its antiquated and runs on Java, so I built out a ROM editor in SpeedLink too. So now you can log, edit, and dump/flash(not yet) with one software. If you have a Tactrix or Vgate vLinker FS grab the latest software from the releases page and backup a factory file from your ecu(s) that you have access to. I should be able to add definitions for new ROM files/ECUs pretty quickly.

Release page is here: https://github.com/mrphyslaw/SpeedLink/releases

Edit:
I added a "ROM dump" workflow/guide. If you don't want to upload the rom publicly just shoot me a message here:

SpeedLink/docs/DUMP_A_ROM.md at main · mrphyslaw/SpeedLink

Open-source Mazdaspeed/MPS ROM reader, editor and logger. Windows Workbench alpha with 2D/3D maps, CSV logs and verified backups; ECU programming disabled. - mrphyslaw/SpeedLink

github.com