Transducer is good and "red hat" is good. All tubing is clear. Any insight would be extremely helpful. Its causing the IGV to goto 100 percent open.
Check the dc voltage at the sensor. Green = negative, red = supply, black = signal. At 1.5", the signal should be around 1.25-1.5 vdc. Are you getting a SA Pressure sensor failure at the ipak interface.
Stupid question but are your Hi, Low tubing landed backwards on your transducer?