We built a free BMW tuning flasher to give the community real control.

[RFTX_TUNING]

Why I Built RFTX

For a long time, flashing your BMW meant paying high fees for licenses, apps, and locked tools.

I’m a car enthusiast, just like many of you. I built RFTX to make tuning more accessible — no expensive apps, no unnecessary license costs, no barriers.

With RFTX:

• You only need a basic OBD cable.
  
  
• No license fees or subscriptions.
  
  
• Real control over your car without hidden costs.
  

RFTX is built for the 17-year-old tuning his first 335i.
It’s for the guy building his dream 700hp single turbo project.
It’s for the M3 and M4 owners who deserve to flash without getting overcharged.

RFTX is built by the community, for the community — and it will remain free, always.
https://rftx-tuning.github.io/WEBSITE/

 

[eastsidaz]

Impressive! This will be very useful. Cheers

 

[carabuser]

Very interesting. Does the flasher handle all the logic changes that are required on the N54 to target above 18psi? If not, does it allow program modifications in the binary to be written or is it calibration only?

 

[ShocknAwe]

Interesting. Nice to see an open source project.

 

[fstbtstr]

This is great, however, I don't see a source code. Would be ideal if it was possible to build it from the source and not just get some binary file.

 

[RFTX_TUNING]

sorry guys here is the backend https://docs.google.com/document/d/1ehI7uTgSKOD4MB0P2Ph3rrhBI6wXAtjFlaA82G9-uAk/edit?usp=sharing

 

[RFTX_TUNING]

here is the repo https://github.com/RFTX-TUNING/RFTX_SOFTWARE/blob/main/RFTX_FLASHER.py

 

[JPuehl]

I see "built by the community" and "built by BMW enthusiasts" but I haven't seen mention of this on any forum, asking for help or ideas, etc. I'll wait for someone else to be the first to use it, show logs and feedback.

 

[3xpent]

I don't know. From an abstract point of view it seems quite OK, it has UDS read / write / erase memory, as well as some implementation of security access.

But when looking deeper at the code, I have doubts. Especially originating from the security access implementation. While I am new to this topic (as in "after market ECU flashing" but not in automotive EE in general) and don't know whether it's legit or not it doesn't seem legit to me. Security Access can't be just some static XOR or CRC checksum (https://github.com/RFTX-TUNING/RFTX...eca389d1715efd3de9a31119/RFTX_FLASHER.py#L848). There needs to be more than this. Even in these 15+ years old platforms.

In my opinion this is a GenAI based fake.