[Jonny H]

When people say they’ve had them in for 15 or 20 years with no issues I believe that. The thing is, 15/20 years ago they were probably made in less volume and tested to a higher standard.

There is an inherent problem with most powered sensors which is to do with low battery voltage cranking. At some voltage threshold, the sensor will power off which causes the output to switch off. The problem here is that this is ‘seen’ by the CDI box as a trigger signal.

So, when you crank an engine the battery voltage drops as the cylinder pressure rises and if this causes the voltage to fall below the threshold, the CDI box will fire. Often this is way before TDC so the engine will kick back. This typically happens when the battery is already low, making the car difficult to start.

I’m not trying to bash the product but YMMV.