... fuel pressure of Audi five-cylinder engine, gauge outfit can be combined with Connector 1 and 2 ... fuel pressure of Audi six-cylinder engine, gauge outfit can be combined with Connector 3 and 4 ... Flag” car with electronic fuel injection system, gauge outfit can be combined with rubber hose. Connector 1 ... Connector 7, Connector 8, Connector 9, Gauge outfit(2). Relieve pressure on fuel system according to ...