That still sounds scary, both tunercat and LS1edit I have show the VIN # for all 97 and 98 models.

How would the tuning tool proect in putting the wrong flash in a car without crosschecking the flash file with the VIN # ?
also would be a issue if changing certain segments of a PCM if the tuner tool does not know when year from another ?

As for the A4 the Ease scanner shows over 100 trannie PIDs