In my effort to self edumacate and understand why I get random knock at 80-100km/h (50-60mph) cruise, I've discovered it almost always (>95%) happens when I'm in Closed Loop Fuel Learning/Fuel Trim Cell #9.
Is there a table relating to Fuel Trim Cell visible in the Editor for an E38 ECM that might be connected with why I'm getting knock?.
Is monitoring this sensor of any value?.
The attached is typical and occurred while doing a VVE calibration at 12.5 AFR.
Piccy_06 2018.05.21 20.26.gif