A2L description files
The map of a calibration — names and addresses, not a file you flash. 0 files, each matched by the number on the module.
What is an A2L file?
An A2L is not a calibration. It is the description of one: the list of what lives where inside the module, with names, addresses, units and conversion factors. On its own it does nothing to an engine.
What it changes is the work. Open a calibration without one and you are staring at raw addresses, guessing which block of numbers is which. Load the matching A2L and the same file shows named, labelled maps — the difference between reading a document and reading a hex dump.
An A2L belongs to a software version, not to a truck. It has to match the version in the module or the names it supplies will point at the wrong places, which is worse than having no names at all.
- Seeing named maps instead of raw addresses in your editor
- Understanding an unfamiliar calibration before touching it
- Comparing two calibrations by what the values mean, not where they sit
- Original (stock) files — the manufacturer's own calibration, exactly as it left the factory.
- Mod files — a calibration that has already been modified from the factory original.
Questions
No. An A2L only describes a calibration; there is nothing in it to write to an engine. You flash the calibration file, and use the A2L to read it.
No — it has to match the software version. An A2L from a different version will name maps that sit at different addresses, so it will confidently label the wrong things. Match the version before you use one.
Match by number, not by model. The ECM code, part number or software version printed on the module is what identifies a calibration — two trucks that look identical can take different files. Every listing shows the number it belongs to, and the search box at the top of the site searches those numbers directly.
A download link for the calibration file itself, sent to your account and by email as soon as the payment clears. There is no waiting on us to prepare anything, and you can re-download it from your account later.
Yes — files are supplied as read, with their checksum intact. If you then edit one yourself, the checksum will no longer match your changes; the checksum tools on this site rebuild it for you in a few seconds.