Nissan trigger
Nissan has three different patterns, sensor is located at camshaft. One signal
consists of 360 evenly spaced pulses, each representation of 2 deg engine
movement. The other consists of the same numbers of pulses as there are
cylinders. Replace the trigger disc to a new with same numbers of pulses as there
are cylinders (cylinder pulse) and one pulse for cylinder reference.
With the 1.09 chip the stock trigger disc can be used in conjuction with a diode,
consult your dealer.