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Jeep Grand Cherokee Factory Exhaust Manifold

You can see in the factory design of the exhaust manifold that escaping gases will actually collide rather than flow smoothly away from the engine. This causes the engine to work harder dispersing exhaust, hence a loss of power.
Jeep Grand Cherokee - Easy Power With Doug Thorley

 You can see in the factory design of the exhaust manifold that escaping gases will actually collide rather than flow smoothly away from the engine. This causes the engine to work harder dispersing exhaust, hence a loss of power.  View Related Article

 

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