The exhaust manifold, commonly referred to as headers, works with the exhaust to dispel fumes formed in each of the engine’s cylinder. The faster these fumes exit the cylinders, the lower the temperature will be and the better the engine will operate.
Image by an Iraqi artist taken in an orphanage. This little girl has never seen her mother, so she drew a mom on the ground and fell asleep with her. Such a sad picture. I can only imagine the heartbreak children like this feel.