I have a few questions:
What octane gas are you running?
What is your base fuel pressure?
What is your fuel pressure under boost?
What is your base timing?
What is your total advanced timing?
Does it ping at low boost or high boost?
I am trying to figure out if you are running a little lean or maybe to much advance. I would also suggest something like a PMS in the future. Issue like this could be avoided.
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