POP AND BANG MAPS Explained

Pops, bangs and flames; everyone likes that, don’t you?

Representation of flames from exhaust.(Not Pops &Bangs)

 

It's because of ECU remaps that make your exhaust pop, bang, and kick flames from the tailpipe when you lift off the throttle are hugely popular these days.

Some sports models come out of the factory with crackling exhausts, with brands like AMG, BMW M Series & Mini JCW.....

SO HOW DOES IT MAKE THE POPS AND BANGS?

“Pops and bangs is simply a calibration feature within the ECU where we set up a specifically targeted, very lean misfire once you lift off the throttle.”

Normally during engine deceleration the injectors are switched off to prevent fuel from entering the combustion chamber. When applying a pop and bang patch to an ECU we request the injectors to stay open for a short period of time after the throttle plate has closed. The spark timing maps are then adjusted so that the fuel is ignited substantially after TDC (Top Dead Centre). This results in fuel igniting during the exhaust stroke and creating small explosions within the exhaust system. These small explosions are what create the popping and banging noise and in some cases small flames can be seen exiting from the rear silencers.

Aside from the sound benefit, pop & bang also has a performance advantage. It further reduces or completely removes turbo lag after deceleration.

Top Dead Centre is the position of an engine's piston when it is at the very top of its stroke.

MANY HAS A QUESTION.

 “DOES A POP AND BANG MAP CAUSE ANY RELIABILITY PROBLEMS”?

If done properly, kept under control, well tested and not taken too far it is completely safe. In fact, many manufacturers offer pop & bang sounds as a stock feature for their cars and they come with regular warranty and safety claims. So, yes, pop & bang, if done right, is completely safe. 

Fun Fact 

Choose your tuner wisely. Find someone who will ensure it’s reliable and safe for your particular set-up and chosen use. Pops and bangs are fun, don’t just go for someone who promises the craziest, loudest fireworks display from your exhaust.

Please do get to know the stuff before making any changes to your vehicle. 

Feel free to ask us your questions on anything, and do correct us if we write anything wrong .