You can "reset adaptation" in your throttle. I forget the exact proceedure but there's a position for the key, you press the accelerator pedal to the floor for 30 seconds and release, turn the key back to off for 10 seconds and then to ignition position to start the car. I foget it but google "throttle adaptation reset e53" and it should help.

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'03 4.6is (the wife' s ride)