[Topless in Cali]

I just got my upgraded wastegate and boost controller working without setting off the check light, but noticed that the BOV (I have the forge) started fluttering under boost. PCM maybe?? So I put the next stronger spring in it. I went out for test drive and immediately the check light went off, but instead of a 1188 code I was getting for overboost, now I'm getting P0443 code. Purge valve control circuit. Does anyone know if this code is because the PCM cannot lower boost by opening the blow off valve becuase of the stronger spring I installed?? It does blow off when I release the gas for shifting so the BOV is still working correctly, but probably not as much as it did before. Any thoughts...