The 6.7L Cummins engine is known for ... in your truck senses the high manifold temperature via the manifold absolute pressure sensor (MAP), it will reduce power to cool the engine down.

The manifold absolute pressure sensor reads the amount of pressure or vacuum (also called “engine load”) in the intake manifold, where outside air is divvied up in proper amounts and ...

In this article, we’ll explore how an upgraded Cummins intake manifold can improve engine ... reach full speed before producing enough boost pressure. The SPELAB 6.7 intake horn demonstrates ...