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Sound you get is depemdant a lot on exhaist setup amd if your tirbo or SC.
if you using base B timong all you can rearly do is play arround with the amount of ignition retard you apply and the load\rpm range
lower retard like 0 to -6 generally wont get bangs, higher retard like -16 will get more bangs.
The euro cars that have crackles tuned in likely have specific code in the ecu to create the crackle effect
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