i just upgraded my map sensor from stock d jetro to aem 3.5 bar ....
now the cars runs gr8 but the commander is showing some false readings ..
eg ,if the boost is actually 2 bars the comander shows 1.2 bars peak ...
and at 1.6 bar my idc on the comander in 100% and on 2.2 bar it shows 100% also ,but my tuner says that its due to the new map sensor its reading a bit low but actually on his laptop every thing shows actuall ...
so is this normal?

 

You will need to calibrate the new MAP sensor by setting up the appropriate offset and scale setting I believe. This is what I had to do when i changed my MAP sensor.

 

can u guide me a little how to callibrate it ?