MAP Sensor PnP Pigtail for Ford Fiesta/Focus ST

Why would I want to replace the MAP Sensor in my Fiesta ST? There are actually a few reasons: First, the OEM MAP Sensor is a 3 Bar Sensor and can accurately read up to 29.xx PSI. So if you are running below this pressure on your current setup, then this upgrade may not be necessary. But for anyone running over this pressure, knows that the “Boost” monitor on the Accessport can no longer be used to monitor pressure. Common practice is to upgrade the TMAP Sensor in the cold pipe with the Bosch 3.5 Bar unit, and now monitor “TIP Actual” for our boost pressure readings. As I have said in previous posts, this is not an accurate representation of the PSI that is currently in the manifold and being ingested into the engine. The only way to read this pressure accurately is to upgrade the MAP Sensor. Second, the Fiesta ST ECU is “Speed Density” based. So all airflow/AFR calculations are based off different engine sensors like air temperature, barometric pressure, and manifold pressure (MAP)