I called bwr and they gave me the scailing chart for the 4 bar sensor.
4 bar map sensor voltage chart.
It is possible that detroit is slightly above sea level and you can use 12 11 in the formula for 1 mile above sea level.
It s a bosch 0261230042 used in the redline saturn cars.
This signal voltage corresponds to the pressure in the inlet manifold.
The way the chart reads to me is the range is 20 250 kpa.
Applications up to 30 lbs.
Introducing the first plug n play 3 5 bar map sensor designed for the mzr disi.
Now at a slightly higher elevation reading flickers between 1 78 and 1 79v giving a reading of 0 9 psig engine load with the car off.
This sensor will respond to changes in manifold pressures and relay the information to the ecu in the form of a voltage signal ranging from about 1 volt to 5 volts.
Linear output based in this info chart shown is for a 2 bar scaling to 29 4 psi.
Map sensor voltage vs pressure.
Initially the engine is not yet running and the signal level is around 4 5 v.
But i made a tube so i can add boost and watch signal voltage as you can see readings in kpa so 100kpa is 1 bar i got 4 bar map sensor but its only reading 1 8 1 9 bar with 4 91v but if i add more boost wont read so its max out at maybe 2 bar boost so why is that a 4 bar then or maybe i did some thing wrong if anyone can help me.
Download map sensor measurement.
With a maximum accurate pressure reading to 35psi the corksport 3 5 bar map sensor will keep you covered from k04 to big turbo.
Several different versions are available for normally aspirated and engines with blowers.
5v test pressure kpa 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 400 voltage 53 82 1 11 1 47 1 77 2 06 2 32 2 61 2 9 3 19 3 47 3 76 4 05 4 33 4 62 4 91.
Formula for the gm 3 bar map sensor is v 8 94 14 53 i have no idea why it s 14 53 and not 14 696 rounds up to 14 7 but it works out on gm s chart every time.
Lab scope measurement of map sensor.
Atmosphere equals 1 bar or 100 kpa 5 x 0012858 x 100 04 843 volts 1 bar or 100 kpa omnipower map sensor voltage vs pressure data.
The pressure inside the intake manifold is an extremely important input to the ecu.
400 kpa map sensor test voltage.
The custom injection molded body features the oem style connection for a quick and clean installation.
No adapter wiring harness needed.
A manifold absolute pressure map sensor lets the ecu know how much pressure is in the intake manifold at any given time.
Channel 1 red in figure 3 shows the map sensor signal.
Apparently it s a gm cheverolet performance 3 bar sensor which should have an approx.
The part is ac delco 12592525.
Below is the chart for my 2 5 bar map sensor.
