Purge solenoid ignoring speed and airflow limits

While I was doing some idle tuning I noticed the purge solenoid was opening and adding unwanted air. For some reason only the min temp value B0501 is operational. Anything I set B0502 and B0503 seems to have no function which I need to prevent it from opening when stationary at idle. Has anyone come across this issue and found a workaround? I have tried a full flash and still no luck. Engine is an LQ4 with 1MB LS1B green & blue connector PCM. Running COS 3150003. The solenoid is definitely working as the temp parameter does control it.

Attachment 24996

Attachment 24997