The MAP sensor monitors air pressure inside the manifold and detects leaks and other abnormalities. In comparison, the MAF sensor measures how much air is entering the intake system and, ...

We used an RSX to get an idea of the optimum ECU settings for economy. A common way to get a rough idea of fuel economy is to use a pressure gauge to monitor manifold pressure while driving.

In isolation (non-manifold), the sample inlet pressure is the same as the atmospheric pressure, so the unit maintains a 1.0 CFM flow, plus or minus its nominal tolerance (e.g., 5%).

In isolation (non-manifold), the sample inlet pressure is the same as the atmospheric pressure, so the unit maintains a 1.0 CFM flow, plus or minus its nominal tolerance (e.g., 5%). However, when ...