The functional objectives for fuel injection systems can vary. It indicates it has a direct fuel injection. "638 OHV" fitted with direct fuel injection. In 1981 the 2.0 became available with electronic fuel injection. This is achieved with different camshafts and fuel injection mapping. The adoption of fuel injection brought no performance increase. These engines included both carburetor and fuel injection engines. Power increased to for 1975, by changing to fuel injection. With fuel injection, it produced and . Both engines have belt driven camshafts and Electronic Fuel Injection systems. This unit works in much the same way as a petrol fuel injection control unit. Fuel was delivered via Multiport Fuel Injection. Used K-jetronic fuel injection. The prototype engine produced at 5400 rpm, fitted with Bosch K-Jetronic fuel injection. It features an updated body and 1.7-l gasoline engine with fuel injection.