On the way to investigate lag in power and throttle response came few things. My distributor cap is a bit worn off, Spark plug wires are of in appropriate length. I had thought to look at parameters when this phenomenon happens. Got myself a scanner, Following is the data. What can we analyse of this

O2 sensor at Idle



O2 sensor at 2.5k RPM




Short Term Fuel Trim (I consider it Abnormal but why)
Sudden Drop presents state when Full Throttle was suddenly pressed



Intake Absolute Pressure
Sudden PEAK presents state when Full Throttle was suddenly pressed



Timing Advance
Sudden Drop presents state when Full Throttle was suddenly pressed. Why does this happens



Unknown Sensor
Sudden Drop presents state when Full Throttle was suddenly pressed




Thanks

 

Like No one who has the clue about why advance timing drops when throttle is pressed?