WS3B dual trace patterns

toyota 4A-FEMAP against Injectors:
As the MAP voltage increases the dwell time for injectors increase also. Therefore the injector increases more fuel due to more air entering the intake manifold. If the MAP voltage doesn't increase and the injectors increased in frequency the engine will run rich use heaps of fuel and poor emissions. (poor emissions is bad for the economy)

RPM against Injectors:
As the cam speed increases the dwell time will increase and the injectors will increase in frequency. If the cam speed increased the engine load will increase also and if the injectors stayed at the same frequency (1ms) you would get a poor combustion (weak) and it may even be early combustion and result in poor performance and eventually damage the engine.

Oxygen sensor against Injectors:
The oxygen sensor fluctuates at idle. As the engine RPM increases the fuel increases in the injectors. As more fuel enters the combustion chamber a rich mixture is burnt and a hi number of oxygen partical are left to flow past the O2 sensor. The O2 sensor can affect the injectors by, if the O2 sensor was reading hi oxygen levels the ECU will tell the injectors to lean off the mix therefore the injectors wont be working in relationship properly with the RPM sensor.
With a high voltage at the O2 sensor the engine is running rich.

Ignition primary against Injectors:
On idle the relationship between the two are the frequency that they are operating at stay the same and as the engine revs up both frequencys increases equally. If the ignition primary was out it would affect the injector by not igniting the air fuel mix properly or on time.