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View Full Version : Stock MAP Voltage -> PSI Table by: Funks


Hitman
11-02-2019, 07:34 PM
http://www.beol.net/~daze/map.jpg

^ Thank CompuDaze for that graph..

Quote:Originally Posted by FunksNOTE: For S0/S1 MAP Sensor

To figure out what PSI a certain MAP voltage is..

Do the following

formula: PSI=(6.5683 * map_voltage) - 13.662.

given MAP_VOLTAGE=4.78v

X=(6.5683 * 4.78v) - 13.662

so

X=13.732

To figure out what MAP voltage a certain PSI is, do the following

formula: X=(PSI + 13.662) / 6.5683

given PSI=17

X=(17 + 13.662) / 6.5683

so

X=4.668 volts



NOTE: For S2/S3 MAP Sensor

y is VOLTAGE
x is PSI

equation, Y=0.1120X + 1.65

To figure out what a particular voltage (let's say, 2.21 volts) corresponds to what psi

2.21=0.1120 (x) + 1.65
2.21 - 1.65=0.1120(x)
0.56=.1120(x)
0.56 / .1120=x
5=x

so 2.21 volts=5 psi.

to figure out what the voltage is for a particular PSI (eq. 18 psi)

y=0.1120 (18) + 1.65

y=3.666v

so 18 psi==3.666v

G

Hitman
11-02-2019, 07:35 PM
Here's a simple lookup table for the Stock MAP Sensor.

psi,voltage
0,2.08
1,2.23
2,2.38
3,2.54
4,2.69
5,2.84
6,2.99
7,3.15
8,3.30
9,3.45
10,3.60
11,3.75
12,3.91
13,4.06
14,4.21
15,4.36
16,4.52
17,4.67
18,4.82

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