Emission Control Systems: Application and ID

80 2.0L/4 CYL. PCV, EEC, CAT, CIS MOTRONIC, OS, TAC, FR
80 QUATTRO 2.3L/5 CYL. PCV, EEC, CAT, CIS-E III, OS, EGR*, TAC, FR
90 2.3L/5 CYL. PCV, EEC, CAT, CIS-E III, OS, EGR*, TAC, FR
90 QUATTRO 2.3L/5 CYL. PCV, EEC, CAT, CIS-E III, OS, EGR*, TAC, FR
90 QUATTRO 2.3L DOHC/5 CYL. PCV, EEC, CAT, AFC, OS, EGR*, TAC, FR
COUPE QUATTRO 2.3L DOHC/5 CYL. PCV, EEC, CAT, AFC, OS, EGR*, TAC, FR
100 2.3L/5 CYL. PCV, EEC, CAT, CIS-E III, OS, EGR*, TAC, FR
100 QUATTRO 2.3L/5 CYL. PCV, EEC, CAT, CIS-E III, OS, EGR*, TAC, FR
200 2.22L/5 CYL. PCV, EEC, CAT, CIS-TURBO, OS, EGR*, TAC, FR
200 QUATTRO 2.22L/5 CYL. PCV, EEC, CAT, CIS-TURBO, OS, EGR*, TAC, FR
V8 QUATTRO 3.6L/8 CYL. PCV, EEC, CAT, MOTRONIC, OS, EGR*, TAC, FR


PVC - Positive Crankcase Ventilation
EEC - Evaporative Emission Control
CAT - Catalytic Converter
AFC - Electronic Air Flow Controlled fuel injection system.
CIS-E III - CIS-E III Injection (Bosch KE3-Jetronic)
CIS MOTRONIC - CIS MOTRONIC Injection (Bosch KE-Motronic)
MOTRONIC - Bosch Motronic injection system
OS - Oxygen Sensor
TAC - Thermostatic Air Cleaner
FR - Fillpipe Restrictor
* - EGR was introduced mid year, in California only.