Still trying to pin down what initiates the herky jerky episodes. One anomaly in the scans is occasional rapid changes in injector pulse width. E.g., suddenly goes from 5.3 ms to 2.3 ms in a 1/4 second, then returns, while throttle angle & road speed are not changing. What could cause this?
Is there a MAP sensor in this system? Id so, maybe an intermittent vacuum leak?
TIA
Ed