As this is a 92 4x4 it would be a green top and the lambda sensor would be standard. I really don't know anything about the system as mine is a red top but I wonder if the ECU doesn't get a signal from the sensor if it doesn't just revert to open loop operation in which case the car would still run O.K. but the fuel consumption would be higher off boost. I am sure one of the tuners on here could confirm what the symptoms of a disconnected lambda sensor would be. As for the fuel pump - a Bosch 044 is a higher flow pump usually fitted when increasing the output with higher flow injectors etc. They usually just use loop terminal ends. As far as I have been able to find, the original terminals as shown in your photo (The ones you squeeze the two little tabs to release) are no longer available new, but you can also use the loop terminals on a new loom on the original pump (which I suspect yours still is.) Cheers David