[LATECH]

Saw the paragraph in the megasquirt article

The code can cope with any tooth #1 angle. However ,during cranking,the engine speed varies up and down greatly as the engine rotates. It is desireable to place the missing tooth such that it passes the sensorwhen the engine speed is somewhat stable or it may be impossible for the ECU to "see" the missing tooth. The OEMs have found that certain #1 tooth angles work well and it is worth following there lead.

That paragraph right there tells me that rotational velocity of the crankshaft WILL affect tooth count /pulses on this system.

Maybe the trouble is going on at higher RPM because of a belt or a balancer causing a velocity change in the crank due to mechanical reasons you cant see