What is the purpose of the ICM in an Audi 80 and how does it affect vehicle performance?

I am researching the inner workings of my Audi 80 and came across the term ICM. What exactly does the ICM do and how does it affect how my car runs?

The ICM, or Ignition Control Module, is an important component in your Audi 80's engine management system. It plays a crucial role in regulating ignition timing, fuel delivery, and other engine functions. If the ICM is malfunctioning, it can result in poor engine performance, reduced fuel efficiency, and potential engine damage.