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What is a Header?
A Header is a specially designed exhaust manifold which improves engine efficiency and power by allowing the exhaust gases to escape from each cyclinder in a faster more efficient manner.
Factory fitted exhaust manifolds are mass produced items which sacrifice engine efficiency and power output in favour of low cost production. The result of these restrictive manifolds are excessive turbulance and back pressure, reducing fresh intake volume into the combustion chamber, making the motor work harder to gain power.
Less fresh intake - Low efficiency / Reduced power / Higher strain on motor / Higher engine temperatures.
Headers are designed to increase power and economy by allowing the exhaust gases to flow freely from each cylinder, therefore increasing the amount of fresh intake charge into the combustion chamber.
More fresh intake - More efficiency / Increased power / Less strain on motor / Reduced engine temperatures.
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Header Design
Not all headers are created alike. Different designs can have a great effect on engine performance. Many factors are used to determine header design and specifications including engine size, vehicle weight, gearing, and expected RPM range are considered in the development process. Genie Headers use two different design styles on some applications to suit different requirements of motorists.
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The 1st Style is the Intereference or Tri-y-Header. This design is more suited to standard and mildly modified motors, making more useful power at lower RPMS used in day to day situations and the occasional traffic light challenge. |
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The 2nd Style is the Tuned Length Header. This design is more specifically for motorists who run their vehicles at Higher RPM and heavily modified larger capacity motors. |
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