Privacy & data use

ZX2-Tune-Talk is a research tool for the Ford EEC-V PCM used in the Ford Escort ZX2. This page explains what the app collects when you upload a calibration and chat about it, why it is collected, and how you can remove it.

What we collect

• The 256 KB PCM binary you upload, stored in a private bucket.
• Derived metadata computed from that file: its SHA-256 hash, size, a byte-distribution summary, printable ASCII strings, and the first and last 64 bytes in hex.
• The chat messages you send and the AI responses.
• Account information from Google sign-in (your email address and basic profile), used only to create and secure your account.

Why we collect it

Uploaded calibrations and their metadata become part of an ongoing reverse-engineering research dataset that we use to expand the tool's coverage of Ford ZX2 calibration strategies and to improve the accuracy of the AI's answers. Chat content helps us understand how the tool is used and where it can be better. This is an independent passion project run part-time around a day job that also funds its AI usage, so uploads are reviewed on roughly a two-week cadence rather than in real time.

What these files contain

ZX2 EEC-V calibration binaries hold engine calibration and tune content. They do not contain a VIN or personal identifiers: the vehicle ID (VID) block is disabled on this platform. The uploaded data is calibration content, not personal data.

How it is stored and shared

Files are held in private project storage and are not published publicly. As noted at upload time, uploads are not kept private to your individual account: they become part of the shared research dataset the project works from. We do not sell your data.

Deleting your data

You can delete any uploaded binary from the app at any time, which removes the stored file and its database record. Insights already folded into aggregate research notes may persist, but the original file and its metadata record are removed. To delete your account and associated data, contact us using the address below.

Contact

For questions about your data, or to request deletion of your account and associated data, send a message below. Leave an email if you would like a reply.