new noise

[tb 99 7.3]

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yesterday while i was accelerating i started to hear a medium pitched howling or whistling noise. it just started doing it i have never heard it before. i can really only notice it when i am under moderate to heavy acceleration. i have an edge juice attitude programmer and it happened when it was on the highest setting but still does it in all the settings. it just gets louder when i turn the settings up. the boost and everything seem to be fine, the temp is ok and i am not leaking any fluid. does anybody have an idea of what it could be? i think it might be my wastegate of my fan clutch