All posts by Jeff

3 bar MAP sensor

I picked up a 3 bar MAP sensor in anticipation of installing a pair of BorgWarner K04’s.

oem s4 and 3 bar map sensor
OEM vs 3 Bar Side-by-Side

Some of the dimensions of the two:

O-ring notch
O-ring notch
O-ring notch height
O-ring notch height

OEM sensor:

OEM Sensor O-ring width
OEM Sensor O-ring width

OEM and 3 bar side-by-side:

S4 OEM and 3 Bar
S4 OEM and 3 Bar

Old vs New MAP Sensor

Concern about the accuracy of the MAP sensor on the car led me to removing the part and replacing it with a new MAP sensor that I had in my tool box.  I went and took a second set of logs with the new sensor and made a comparison.

Boost pressure reading from Old vs New MAP Sensor
Old vs New MAP Sensor

It looks as though the old sensor is still functioning correctly.