Coverage

OpenRemap recognises 38 extractors across 6 manufacturers. Not "some ECUs" — a specific, documented list, from 1982 to the 2020s, covering the diesels and petrols that actually show up in workshops and driveways.

Why this is the part that matters

Every other feature depends on it. If the tool cannot tell which ECU it is looking at, it cannot tell you whether a recipe belongs to your file, whether a checksum should exist, or which tables are plausibly real.

That is why coverage is built the hard way: one extractor per family, each with its own evidence, tested against real binaries, and each one readable — the detection logic is not a black box, it is code you can open and disagree with.

The six

Each manufacturer page lists its families with era, typical file size, the vehicles they shipped in, and what identifies them. Two manufacturers also have an internals page: how the detection works, what the ident blocks look like, and what the extractor reads.

Every family page answers the same four questions

1. Which cars? — the vehicles and years this family appeared in.
2. How big is the file? — 32 KB to 8 MB, and which sizes are normal.
3. What is inside? — the memory layout and where the calibration data lives.
4. How is it recognised? — the markers the extractor uses, named.

That last one is unusual, and deliberate: detection you can audit.

Not on the list?

Two honest paths, and neither one involves sending your file anywhere:

• identify it anyway. Plenty of useful work — layout, tables, checksums, VINs — needs no family at all. The tool will say Unknown ECU rather than invent a family.
• Add it. openremap contribute extractor measures your own dumps for a marker that is stable in your family and absent from the 38 already supported, then writes the extractor, a test, a report and a synthetic fixture — your binary never leaves the machine. Adding a family makes the whole pipeline work for it: identification, health, maps, recipes, apply.

For the curious

How the extractor registry and the evidence system actually work is documented in Extractors: the BaseManufacturerExtractor contract, the 14 evidence tags, match keys, and how competing claims are resolved.