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Good to knowAbout A3 files
This page lists 132 A3 files that are ready to download. Every file is read from a real unit and is listed by the hardware and software number printed on the ECU label, so you can match your module before you buy. The biggest groups are Original File, Gearbox, Immo Off and Chip Tuning. Control units used on the A3: MED17.5.5, DQ200, MED17.5 and MED17.5.20. Engines: Caxc, Crka and Cayc. Between them they cover 115 software numbers and 62 hardware numbers. To find the right file, read the hardware and software number from the label and type it into the search box, or use the filters by model and ECU type. Files are supplied exactly as read with PCM Flash, Flex and NEW Trasdata. If your version is not listed yet, send us the numbers — most requests are sourced the same working day.
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Frequently asked questions
How do I find the right A3 ECU file?
Read the hardware and software number from the label on your A3 unit and type it into the search box, or filter by model and ECU type. Every file is listed by those exact numbers, so you can match your module before you buy.
Are these original A3 files?
Yes. Every file is read from a real unit; original dumps, immo off, virgin and tuning versions are available where applicable.
Which tools do I need to write these files?
The files are supplied exactly as read and work with common tools such as FLEX, NEW TRASDATA and VVDI PROG, depending on the ECU.
What if my A3 file is not listed?
Send us the hardware and software number from the label. Most requests are sourced the same working day.
How do I get the file after payment?
Downloads unlock the moment your payment clears — straight from your account, no waiting.
