Why are there several Bin File Definitions listed for a ECU Part Number?

There are quite often multiple revisions of Bin Files that are released for a particular ECU Part Number. When this is the case you will see an ECU Part number listed with the revision number following the part number. On the ECU itself you would only see 21175-1426, and not the revision number following it.

For example: 21175-1426_FG3273C and 21175-1426_RG3273C are both valid part numbers for the same ECU.

In this case the 'RG' version is a post-recall bin file revision of this ECU part number, and therefore is the most up-to-date version. So for this particular example if you have a 21175-1426 ECU, it would be safe to flash either the FG or RG version of this part number.

If you are unsure about which revision of your part number you can use, please Open a Support Ticket.

The best way to determine which Bin File revision is inside your ECU is to use Tools > Read Part Number and Serial Number (requires you to open a bin file first).

Then you can Read ECU, and load the Bin File that is currently in the ECU into the Woolich Racing Tuned software. If we do not currently have the Bin File, the Woolich Racing Tuned software will prompt you to send the bin file through to Woolich Racing so we can add it to the software and then Open a Support Ticket to inform us you have submitted a new file.

We like to ensure that you have access to all of the Bin Files for a particular model so you can always flash your ECU back to stock. You will not be able to Write to the ECU until you have sent us the Bin File.

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