Severe performance problems three years ago sent me to the dealership. The tech speculated that the throttle actuator was the source of my woes before pinpointing the wiring harness as the culprit. He tried a new actuator first with no change in performance (whew!), then swapped back to the old one.
Hope it's still good...
Was going to root around the intake tonight, but wife and daughter have retired for the night (master bedroom above garage), so I will wait till tomorrow.
Keep the ideas coming...