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improve knock frequency docu #343

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improve knock frequency docu #343

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9 changes: 9 additions & 0 deletions docs/07-Advanced-Features/Knock-Control.md
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Expand Up @@ -10,6 +10,15 @@ Knock sensor placement can also have a huge role. Many newer engines have multi

Bottom line: to get the most out of FOME's knock control, setup and configuration for the individual setup is needed.

## Knock Frequency (vs Cylinder Diameter)

As mentioned above, knock sensing operates about a determined frequency. FOME provides two calibrations to configure this frequency:

1. indirectly, via given cylinder bore diameter
2. directly, via explicit knock frequency

Only one method should be used; if an explicit knock frequency is provided, any specified cylinder bore diameter will be ignored. Again, providing a non-zero knock frequency override value, will __override__ the implicit frequency computation based upon the given cylinder bore diameter.

## Basic Setup Process

1. Enable the knock sensor and calculate the knock frequency using an approximation formula.
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