Optical Trigger Wheels

Used in many Nissan and Mitsubishi models, many variants but all fundamentally the same.

Often best to replace with custom wheel.

Treat as a Hall sensor in configurations.

Nissan 360

360 Slots on the outer ring, 4 or 6 slots on the inner ring with different sizes depending on model.

Custom Wheels

Parametric model for Fusion360

https://discord.com/channels/1356732771325968627/1430552762097336533/1430552883002081300

Can be used to generate a DXF to get produced by companies such as SendCutSend. Confirmed to work with Spring Steel (.015"). Slightly sanded to remove slag/burrs.

Other retailers offer their own versions.

Full sync can be achieved with a single wheel, with slots that cover both sensors. This allows simpler wiring as both inner and outer are not needed for common aftermarket ECUs. A single 36-1 signal at cam speed is enough for full sequential sync.