My 240sx with a swapped rb25det hasnt been runnig very well. Mid range it loses power. It feels like it doesnt want to boost even though my gauge reads 10lbs. Checked fuel, spark and some wiring as the person who did the swap was either impatient or incompetant because there are wires everywhere. It looks like a car guys nightmare. But my most recent hunch was the tps sensor because it ran slightly better after removing the top connector (as this is a series 2 rb25). But the voltage on the bottom connector seemed sort of alright. It read 0.9v - 4.9v and was a smooth transition, so im at a loss of ideas.

Pull codes from the ecm. It will know if something is wrong. Go from there.