Hi Reuben. You have not stated what the number in the lower left corner of the display reads. The 250 level is the minimum amplitude of the rpm sensor signal. The C03/T03 software runs the engine up to 5K RPM the first time without igniting to make sure the sensor is putting a good signal out before trying to start the engine. What reading do you get with the rpm at about 5K RPM??. Report back please. You should get a reading of at least 250 with the 1000 and even greater with the 500 unless you have a marginal magnet in the nut or a marginal sensor. I need to know what the sensol level reading is and I may have a way of increasung the gain of the sensor amplifier in the ECU. I have never had to do that in the past. Later. Bob.