I've been doing some logging and I'm getting a voltage spike of 3.4volts that lasts for 1 second and drops to 1.7 after.

At the spike the log show:

Knock volts 3.4
Engine load 154.5
Engine speed 8613
O2 10.87
Ign timing 17.45
Air temp 19.4

Another log with more timing showed:

Knock volts 3.1
Engine load 151.7
Engine speed 8699
O2 11.56
Ign timing 20.26
Air temp 28.4

Should I be worried? Any input would be great as Im just learning...

Basic setup info:

InlinePro kit
Aem ems/wideband

 

Hmm...interesting. Well, the default voltage for knock control is 2.7 and you are exceeding that but you are plenty rich.

Wait, are you playing with timing in a linear method or are you going cell by cell? You aren't just tuning cell by cell, are you?

 

The timing map looks very linear up top, no fluctuations at all. I havent started tuning cell by cell yet and the knock control feature was and is disabled for now.

Should I be pulling back timing in that one particular cell?

How sensitive is the stock knock sensor, could I be picking up false knock?

 

Anyone?

 

At what RPM are you finding these high volts?

J. R.

 

Knock volts 3.4
Engine load 154.5
Engine speed 8613
O2 10.87
Ign timing 17.45
Air temp 19.4

At 8613rpm.