I've tried to do my homework and in several places it's been recommended that people using a 2.5 BAR tune should upgrade their MAP sensor to 12592525 which is a 3 BAR MAP. Now, this apparently is plug and play and will work. However I have to ask, since the voltage range of the sensor is calibrated to 3 BAR and the OS only reads 2.5, don't you have to recalibrate something in the OS? Otherwise how will it know that there's a part of the range it cannot read? As far as the OS is aware, 0-5 V covers only 2.5 BAR right? I'm not sure if I'm being clear but basically, what setup (if any) is involved after simply doing the hardware swap? Can you just plug'n'play the new sensor and drive around like nothing happened or do you need to do some re-calibration? Please clarify.
Also, is there a 2.5 BAR sensor that will work on the LS3 and if so, why don't we use it? Thanks.