I keep a public library of “skills” for working on an ECUMaster EMU Black tune with an AI assistant — each one is a structured set of instructions (and, where it helps, a Python script) that teaches the model how to do a specific tuning job correctly: decode a tune file, diagnose a data log, rescale airflow tables, smooth a VE map, audit a whole calibration, and so on.
The skills live here: github.com/4AM365/emu-black-tuning-notes
This page makes them usable without installing anything. Each skill below has a copy-paste block you can drop straight into a Claude or ChatGPT chat window, attach your file, and let the model do the work. The block points the model at the authoritative instructions in the public repo and carries the critical safety rules inline, so it still behaves even if the model can’t fetch the URL.
How to use a block
- Pick the task below that matches what you want to do.
- Copy its prompt block (use the copy button on the code box).
- Paste it into a fresh Claude or ChatGPT conversation.
- Attach the file it asks for — your tune export (
.xml.emub3), a data log (.csv), or a table file (.emubt). - Send. The model follows the skill’s procedure and hands back decoded values, a diagnosis, or a new importable table.
This is a real engine
These prompts read and propose changes to live engine calibration — fueling, idle, cranking, ignition, boost. Always re-verify a few cells in EMU Black after any import, work on a copy of your tune, and never trust a number you haven’t sanity-checked. The AI is a fast assistant, not a tuner with skin in the game.
The skills
| Skill | Use it to… | Attach |
|---|---|---|
| Read & edit a tune file | Decode symbols/tables, understand scaling, change values safely | .xml.emub3 |
| Diagnose a data log | Find why it stalled, ran lean, lost boost, knocked | .csv log |
| Smooth a VE map | Clean the steps out of an autotuned fuel map, keep trusted cells | .xml.emub3 or table |
| Rescale airflow for a new DBW range | Move the idle throttle floor/ceiling without changing how it idles | .xml.emub3 |
| Export a table as .emubt | Turn computed values into a file EMU can import | values / table |
| Audit a whole tune | Get a best-practice review across idle, fuel, ignition, boost | .xml.emub3 |
| Street-tune VVT-i cams | Find the best cam advance without a dyno | log(s) .csv |
| Parse a binary log | Read a .emublog3 directly, skip the CSV export step | .emublog3 + one .csv |
Each page has the full background plus its copy-paste block.