CEL knock with A/C

[turbo84voyager]

Does anyone have problems with the CEL knock on a lot when the A/C is running? I get the CEL quite a bit even if its idiling shortly after startup when the idle is still a little high ( above the RPM. I dont seem to hear any knock but its annoying and i dont want to hurt anything. This happens just as much out of boost as in boost. I am running the turbonator cal 2.5 MP. I did not increase the knock sensitivity. I had the same problem before when I had the g-head and with that one I had the knock set quite a bit higher. Do you think it is sensing the compressor running and think it is knock? As for timing I am running the MP tining table with about 2 more degrees added out of boost. Any info would be appreciated

Thanks,

Justin