[Richard L]

I wonder you can resize the image to about 1000 pixels across, it may be too big for most of pur screen size.

Interesting plt. I wonder how much of the knoock signal contains backgroubd noise, it is normal for the engine to make more noise at higher RPM.

I wonder if you can log a trace wthout load and compare it against the fiull load run, The difference will be a bit more representitive of the knock. I am expecting to see more know at maximum torque region rather increase with RPM.

The human ear is excellent for detecting knock, may be using a stethescope to confirm the actual knock activitity charted.

Richard