On my safc i cant get the readings to come out right and I have it hooked up correctly. i have the pressure at 7 in 7 out. on the reading for the airflow it will only go up to 80 percent. on the pressure readings it is around -750 at idle. i know the airflow doesnt really matter that much, just as long as itisnt at 0 and kill the engine which it did one time. what is the pressure supposed to be at idle, and what settings did you use to get them