Complete NGK Ignition system for RX-8 (all series)NGK ignition coil set for your RX 8 (all series) Failure of the old, used factory ignition system is very common in the RX 8s which can cause damage to the catalytic converter or in worst case the engine. Save yourself from an unwanted engine rebuild by refreshing your ignition coils. These NGK ignition coils perform better than the factory units. If needed, charge time at high revolutions can be increased up to 2. 5ms from the factory 1. 8ms. Set