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9. Their emotional appeal 9. Their emotional appeal When you lift the hood of one's car you see a great deal of components. All at the same time. Unless you are into automobiles this complex visual will deter you from wanting to understand much with what lies underneath the hood. Usually you limit yourself to understanding precisely what is needed to get the job done that you raised the hood. Performance headers are car components that, as his or her name implies increase the performance from the car. To understand them let us first find out how the engine powers your car or truck. The power reaches your car by means of chemical energy kept in the unburnt fuel. It is the auto engine that converts this chemical energy through combustion into mechanical energy and by having a various linkages reaches this mechanical energy on the wheels which drive the vehicle.