Your intake manifold is the heart of your engine’s breathing system, and when it’s clean, sealed, and tuned right, performance and efficiency thrive. From spotting vacuum leaks to knowing when to ...

In the first installment we dealt with the essentials of spec intake manifolds. The story was intended to establish a level of understanding that would enable more specific information to be helpful, ...

The intake manifold distributes air or air/fuel mixtures to the individual cylinders under varying engine speeds, loads, and environmental conditions. Whether the working flow is pure air, air/fuel, ...