there are several different part numbers that were fitted over the years, chances are its still a digi injector its just off a different age car! Heres 3 I know of:
Volkswagen MK2 digifant = 191.8cc/min, Bosch 0 280 150 757, VW 037 906 031A
Volkswagen MK2 digifant = 197cc/min, Bosch 0 280 150 903
Volkswagen MK2 digifant = 197 or 218.1cc/min?, Bosch 0 280 150 902, VW 037 906 031C