Holley HP EFI Knock Sensor Tuning.

I need some help with this. I have 502's and am using the stock MPI knock sensors. Does anyone know how to set this up? Starting knock valves? Or how to test?

Some info I read
https://forums.holley.com/showthread...ors-Holley-EFI

Is the 502 MPI sensor the GM 10456288 as stated in the Holley thread?
My Holley EFI systems should be here this week so I will be curious as well.

I am just using the original MPI sensor from mercruiser. i figure it has to be tuned to the right frequency as it come on the engine.