Gus showed me my SDL IP on his bench before I picked it up. It's a modern version of what dieseldiehard described. Each injector line sprays into a flow meter and it's all shown in a digital display. I don't recall if there was a pressure line into the ALDA for dynamic testing. The IP was returned to me with the ALDA adjustment screw capped with Gus advising me that, "there's really no need to touch that."

Next time (?) I'll ask if it's possible to test the IP with the timer to ensure it's advancing as it should.

Sixto
87 300D