Engine code

CAYC Engine ECU Files – VW

53 ECU files for the VW CAYC engine (Jetta, Passat, Golf and Octavia). DPF Off, EGR Off and Tuning files available. Read with FLEX, NEW TRASDATA and MULTI PROG. Prices from €25, instant download after payment.

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About CAYC files

This page lists 53 CAYC 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, EGR Off and DPF Off. Control units for the CAYC engine: PCR2.1, DQ200 and DQ200D20. Seen on: Jetta, Passat, Golf and Octavia. Between them they cover 53 software numbers and 17 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 Flex, NEW Trasdata and Multi Prog. 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 CAYC ECU file?
Read the hardware and software number from the label on your CAYC 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 CAYC 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 CAYC 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.