These days, developing a combustion engine is all about emissions.
This means an ignition system should be able to ignite both lean and rich mixtures, as mixtures alternate to make catalyst convertors work.
Due to the high voltage of modern ignition systems, the quality of the components is more important than ever. The quality of seals, connectors and wires determines if the car stays trouble free over the years.
That’s why NIPPARTS only produces ignition parts that are as good as the products used by the car manufacturers themselves.