Is it illegal to retrofit anti-lag system for family cars?

[Felix]

Retrofitting an anti-lag system for family cars is illegal. Relevant information about the anti-lag system is as follows: Function: The anti-lag system is actually a special tuning of fuel supply and ignition for turbocharged engines to achieve faster acceleration at startup. Essentially, the anti-lag system is an engine setting method derived from drag racing. Since it deliberately causes the air-fuel mixture to explode outside the combustion chamber, the anti-lag system is equivalent to what is commonly referred to as misfiring. Principle: The purpose of the anti-lag system is to eliminate turbo lag. Its principle is very simple. When the throttle is released during turns or deceleration, the ECU commands the car's fuel system to inject a large amount of gasoline into the engine, but without ignition, allowing this atomized gasoline to pass through the engine unburned and enter the extremely high-temperature (approximately 800 to 900 degrees Celsius) exhaust system.