In terms of tuning or identification of the ECU or TCU we will get asked “whats your box code?”
How do you know or how do you find your box code?
You can take out your ECU or TCU and get the part numbers and letters off it. Or you can take your vag-com (if you have one) And use that (vag-com) to help you identify what you have.
Here is a screen shot of what you can get with vag-com
If you look in the open space with the green letters/numbers. This is the information that Vag-com took out directly from your ECU or TCU. Look at the upper left box. It is labeled VAG Number This is your ECU or TCU part number.
The next box over is the component information. This will tell you more information about what the ECU or TCU is running. In this case its running a B7 Automatic S4.
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Don’t feel left out if you don’t have a vag-com. You can locate and Identify your ECU and TCU bu just going and physically Taking them out of there location. You can see here this is a picture of the upper driver side location just under the windshield. You will notice there is no box cover on this picture. This is to show you want you actually looking for. The shinny area is the chastity belt that is located on the B6 S4’s. In the A% your ECU is on the top and your TCU is located just under the ECU
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