Audi S4 Ignition Systems can be used for this amazing German speedster. Produced for America in 2000 2001 2002 2003 2004 2005 2006 and 2007 in variants, this monster created a lot of buzz in the performance tuner market. Housing a brilliantly designed 2.7 liter bi-turbo engine this car went from 0-60 in about 5.5 seconds. One major disadvantage this car had was that it shared its frame and body with the A4 which was a markedly lower end vehicle, cost wise. Some car enthusiasts hesitated to spend the extra 10 plus thousand dollars only for a beefier engine, suspension, and minor exterior styling differences. Nonetheless S4 Ignition Systems are hot items because everyone that has purchased one of these amazing vehicles are happy with their purchase. Check out our selection and lineup of S4 Ignition Systems. These S4 Ignition Systems will keep this car going in many different ways. The ignition system consists of several components that work together to start and keep the car running. The ignition system can consist of the battery, spark plugs, spark plug wires, distribution block and ignition coil. These components work together to ignite the gas/air mixture that enters the piston. The battery provides the energy the ignition coil increases the voltage significantly like a transformer and the spark plug wires transfers the energy to the spark plugs which ignite the gas/air mixture. If any of these components doesn't function properly the car may run poorly or not at all.