[scarceller]

You can use the BMW Ref/Speed sensor at 1/2 the cost of the Porsche one. Our host sells both search for the following.

Flywheel Ref Sensors
911-606-215-01-M14 (OEM Style - Pelican)
12-14-1-708-619-M14 (BMW style - Pelican)

I just helped someone else out with no-start issue and he confirmed the BMW sensors work and look the same as the Porsche ones, direct plugin.

I would much rather have you test them with the scope when the car does not start just so we know what the signals look like when no start. And if you could test them with car cold as well. If you simply unplug one or both the car will not start and you will not have coil or injector pulses even with the engine cold.