this is a known issue, check how close the filter is on your intake to anything. I bet it's tapping against something under that acceleration. Best test I did was take off the filter (just for around the block) to see if the noise stops it did for me. I then ripped it off and put on something more potent in it's place
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Grand Prix GT2 2004
ZZP Z7 Turbo Kit 62-1, BC, 42.5# Injectors, LT1 MAF, 160 tstat, A/A IC, BOV, 3" ZZP SS Exhaust /w cutout, GMPP Handling kit
339.2 WHP 358.6 WTQ @ 13 PSI (zzp's mustang dyno)