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  1. Factory Fuel Injection
    It may help you to know that the 1975 Opel efi's Auxiliary Air Valve (fast idle valve) Bosch part #028140104 is the exact same part used on the 1981 Audi 5000, 5000S, and 5000 Turbo models. It also is listed for some Alfa Romeo models of that same era. Some parts suppliers do not list Opel but...
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