The throttle body helps the the ignition of the Audi because for the proper ignition the engine requires a mixture of air and fuel. The role of the throttle body is to control the amount of air entering the engine. If the car gets more air, then it refer that there will be more power output and less air means less power output. But the inadequate flow of air in Audi means it can create a host of issues like poor engine performance, reduced power, poor idling and other problems. The following slides define the reason behind the malfunctioned throttle body in Audi.