I searched the FSM but did not find what I was looking for. I suppose that this would be in mv. I want to hook up my knock sensor to one of the inputs of my haltech (O2 sensor/aux in) to see if i could get any usefull info while logging. By knowing the voltage output, i could determine which input is best to use.

Any info at all regarding this proposed setup will be appreciated.

 

that's for a series 5 turbo but I'm pretty sure it uses a very similar knock control system to the FD. More info on the s5 system:



But I realize that's a frequency, not a voltage range. So I'm not sure how much good that will do you. I suspect it's 0-5v though.