Hi Paul, the FSI on that year is probably first generation. It will have pre supply pump in tank and high pressure pump at engine. The high pressure should be between 30 and 100 bar depending on throttle. The pre supply about 5 bar. The injectors and controoled by the ecu which provides the supply and the earth. The lambda is probably teh normal step type but you will know by the number of wires on it. What is the issue and I can probably give more precise info. Jim