I purchased a "stripper" '06 A4 MT avant and now I'm regretting not getting a few options like the trip computer. Does anyone know of a way to put one in after the fact?

As this question was raised elsewhere, what I read is that it's not easy to do. The trip computer is tied into the gauge cluster and replacing the guage cluster is not a trivial thing to do since it needs to be coded to match the code somewhere else (not sure if it's the ECU but might be for the immobilizer).

Thanks for the quick response. I guess I'll just have to live without minute to minute gas mileage.

A replacement cluster goes for $1k. Not to mention installing all the sensors (washer level for instance) and pulling the wiring.

If you mess up you can't re-program it and you have to get another cluster and start over...