your valvetronic actuators will set to the same position when cranking over the car so it's not going to implement any real variance.

all you need to do is warm up the car, remove all spark plugs, release both bank fuel injector connectors (1 each side located on top valve cover cable tray). and crank each cylinder until the compression gauge stops (usually 5 compression strokes)

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2003 4.6, esotril blue, over 215,000KM. Every previous owner failed to keep up the vehicle maintenance. Restoration project.