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 distributed to ...

Your car is full of electrical components that monitor and control various systems and functions. There are so many that it can be a real pain when one or more of them starts to act up. Complicating ...

Got a brain and a decent set of hand tools? If the answer is yes, then consider yourself capable of fixing most of the common maladies your Jeep is sure to experience over its lifecycle. By design, ...

The fuel and spark strategies for a supercharged street car are only as smart as the sensors feeding data to the ECM. Here’s what happens when a blown beast’s MAP sensor can’t keep up, and how to fix ...

The volumetric efficiency table is probably the most important one in any ECU.The vertical axis is engine load, in this case, MAP, manifold absolute pressure, which is the pressure inside the intake ...