Hello
I have build this knock sensor instrument who is compatible for all knock sensor because I have program the interface on microcontroller and support frequency from 4k to 16k knock.
Also it is possible to select the gain and bandwidth.
My question is in our engines 13b what is the freq of knock sensor?
Or if I buy new knock sensor like bosch what freq I have to choose?
I try my instrument in Subaru wrx and work fine ,tested with headphones and professional tuner.

 

This might be what you're wondering..?
https://www.rx7club.com/3rd-generati...4/#post9877686