rocketpower

I have a '86 n/a and developed a small problem regarding the boost/pressure sensor. I have the ecu mod on my dash with the LED for codes. It's indicating that the boost/pressure sensor has a problem. I searched the forum and found some useful info. However, It only lights up when the engines decelerates from above 2500 rpm. When I accelerate, nothing, or down shift below 2500 rpm nothing, idle nothing, I guess that makes the point.

Has anyone else run into this problem. I was wondering if it was not the boost/pressure sensor, but another problem. Any help would be great. Thanks.