1：What is it?
Misfire ignition utilizes a modified computer to reduce the ignition advance angle while applying the throttle. This allows the air-fuel mixture that should combust in the combustion chamber to enter the exhaust header. By causing explosions in the exhaust header before the turbocharger, it propels the turbocharger, maintaining a certain turbocharger speed and producing a "pop... pop..." sound.
2：Function
The main function of misfire ignition is to significantly reduce turbo lag by maintaining a certain turbocharger speed when the throttle is released. This helps improve the vehicle's acceleration performance.
3：Characteristics
The concept of the misfire ignition system originated from WRC (World Rally Championship) with the aim of reducing turbo lag and improving the vehicle's acceleration after decelerating in corners. It is generally used during vehicle operation. When the vehicle is idling or stationary, the misfire ignition system does not operate to protect the engine and turbocharger. However, some high-end modified computers can implement this feature. For example, in drag racing, the misfire ignition system is used during stationary acceleration to quickly bring the turbocharger into operation for maximum power output.
Since part of the mixture explodes in the exhaust header in front of the turbocharger, it imposes a significant load on the engine's exhaust valves, exhaust headers, and the turbocharger itself, which can severely impact their lifespan. Improper adjustment of the ignition advance angle can result in decreased engine power and even damage to related components.
