If you are running a aftermarket map sensor please post a review.

I would like to know the brand who tuned it and what they thought.

AEM, long time, this is on a Honda, mounted on the IM, 3.5bar, they work great and are my tuners map sensor of choice...

bump for more reviews

I have the AEM 3.5 Bar MAP sensor on both my WRX and STI.

You dont have to tune the MAP sensor.....there are 2 values in the ecu that need to be changed. The slope and the intercept of the sensor. Actually, you need to change the High and Low MAP sensor voltage CEL's too....or you will pop low sensor voltage cells. The values are something like 0.5v for a low CEL and 4.8 V for a high CEL.....i just changed them to 0.25v and 4.9v and the CELs went away. The low MAP voltage CEL throws you into limp mode.

You also have to buy a special bracket from Cobb IIRC to mount the MAP sensor.

So once again, you dont have to tune it.....you just need to plug in the correct values for it. Every tuner should be using these values for Opensource/Romraider anyway. The Cobb AP uses Torr instead of PSI so the values are just converted to Torr. This is discussed in the link below.

The transfer functions is as follows:
0.5V 0PSI absolute
4.5V 50PSI absolute

y = 12.5x - 6.25
slope: 12.5 psia/V
Intercept: -6.25 psia


http://forums.nasioc.com/forums/showthread.php?t=1478909

I have the AEM 3.5 Bar MAP sensor on both my WRX and STI.

You dont have to tune the MAP sensor.....there are 2 values in the ecu that need to be changed. The slope and the intercept of the sensor. Actually, you need to change the High and Low MAP sensor voltage CEL's too....or you will pop low sensor voltage cells. The values are something like 0.5v for a low CEL and 4.8 V for a high CEL.....i just changed them to 0.25v and 4.9v and the CELs went away. The low MAP voltage CEL throws you into limp mode.

You also have to buy a special bracket from Cobb IIRC to mount the MAP sensor.



So once again, you dont have to tune it.....you just need to plug in the correct values for it. Every tuner should be using these values for Opensource/Romraider anyway. The Cobb AP uses Torr instead of PSI so the values are just converted to Torr. This is discussed in the link below.

The transfer functions is as follows:
0.5V 0PSI absolute
4.5V 50PSI absolute

y = 12.5x - 6.25
slope: 12.5 psia/V
Intercept: -6.25 psia


http://forums.nasioc.com/forums/showthread.php?t=1478909

Thank you! This is the type of information I was looking for.:)