i added it to my fuel table dash ...it just reads 0.0 ... i added fuel pressure and that reads fine.. i actually switch the fuel pressure plug to the oil pressure sensor and it read the oil pressure ,so the sensor is fine .. i just talked to bill lutz and he said the big stuff doesnt read oil pressure on the laptop ...only when logging ..Did you add it to your big stuff dash (it's one of the menus at the top of the screen)? That's probably what you need to do.