PopBang or Popcorn refers to calibration strategies intended to create an audible popping or crackling
exhaust character, particularly on petrol performance vehicles.
The effect is generally associated with how fuel and ignition are controlled during overrun or throttle lift
conditions.
Aggressive settings can increase exhaust temperatures and place additional stress on components such
as:
catalytic converters,
turbochargers,
exhaust valves,
exhaust systems.
The mechanical condition of the vehicle should therefore always be considered
If the vehicle is equipped with them,
Catalytic converter and Lambda sensor deletion are recommended.
Exhaust modification is required.