Genuine gm 2 bar map sensor.
Gm 2 bar map sensor offset.
I ve been running a 3 bar gm 2525 and switched to a holley 2 bar.
Convert the pressures to mbar.
According to the specs the gm 3 bar reads the following pressure is absolute 501 761 volts 631 average 40 kpa 4 784 5 044 volts 4 914 average 304 kpa.
Installing a supercharger or turbo on your lsx powered vehicle.
Also known as boost solenoid pressure sensor m a p sensor barometric sensor barometric pressure sensor manifold absolute pressure sensor etc.
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Can i use the offset to bump up the kpa to 102 or is the 002 difference not worth worrying about.
Find the minimum and maximum voltage and absolute pressures.
1 bar map sensors are used on na naturally asperated vehicles.
I found the specifications a few voltage mbar specs at this online store s product page.
If your tuner recommends it you may need to use a two bar map sensor for your application.
I added 4 in the map sensor offset and it only changed to 3.
Divide the pressure range by the voltage range to calculate the scalar.
2 bar map sensors are used on forced induction vehicles turbo supercharged.
2 bar map sensors are used on forced induction vehicles turbo supercharged.
I m running a holley hp with a 3 5 bar map sensor.
It took 2 0 to get the sensor to zero out.
Key on the gm map sensor read 102 the holley map sensor reads 100.
Here is how to calculate the scalar and offset for a map sensor.
These sensors accurately produce voltage or frequency as intake manifold pressure changes and the computer uses this information to measure.
They can measure up to 2x the apmospheric pressure 29 4psi so that means it can measure up to 14 7psi boost the atmosphere is 14 7psi 14 7psi from the turbo supercharger.
Subtract the minimum and maximum voltages to find the range then do the same for the pressures.
This is for the gm delphi 3 bar map sensor with part number gm part 12223861.
They can measure up to 2x the apmospheric pressure.