Make Model(s) Engine / Fuel System Years (Approx.). Audi 4000, 5000, 80, 90, Coupe GT 4-cyl & 5-cyl CIS engines ~1976–1989 Warm-up regulator and fuel distributor connections. BMW 320i (E21), 528i, early 6-Series M10 & M30 engines w/ CIS ~1976–1983 U.S.-spec cars with Bosch K-Jetronic.
