If you have a scanner you can just scan your maf frequency and if it exceeds 11,500 then you are outflowing it. To test for false knock dump a couple gals of race fuel in you gas tank when it is empty and see if the knock is still there. If it is it is false if not then it is real.

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Red 2dr 99 GTP: Z7 t66, A/A IC'd, Custom Heads, 65# Inj, ST2 Cam, Meziere Elec Pump, JP Double Roller(with machined crank gear), Plogs, PLX W/B, Powrtuner

99 Regal GS (work car)