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Knock sensor

EFI Tuning Fundamentals

Discussion and questions related to the course EFI Tuning Fundamentals

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since the frequency set in the dsp of the ecu is in relation to bore size, what if you bore the block? Does this throw the frequency off and give inaccurate readings? If so, how do you go about fixing this?

G'day Damen.

Have a quick play with this calculator: and you'll see that the amount you're going to bore the block doesn't make a massive difference to the knock frequency. Most ECU's will have selectable filter options on the knock input though, which will allow you to dial in a better signal to noise ratio.

Awesome! Thank you Zac. Much appreciated.