MAP sensor offset and slope calculations
Hello all,
I have a turbocharged Ford Focus and I'm trying to set the correct values for my new Bosch 3 bar map sensor. Anyone can help?
I'm using SCT Advantage software for ecu tuning and I replaced the stock 1 bar map sensor for a Bosch 3 bar sensor.
The default values for my ecu with a stock 1 bar map sensor are (I'm guessing the stock sensor is 1 bar, since the car is NA from factory):
MAP sensor offset: 0.7514
MAP sensor slope: 0.0353
After a little math, I got these numbers:
for bosch 3 bar
P1 -> 11 kPa at 0.25V
P2 -> 307 kPa at 4.75V
slope
(307-11)/(4.75-0.25) = 296/4,5 = 65,77
offset
65,77 x 5 = 328,88
328,88*(4.75/5) = 312,43 - 307 = 5,43
307 - 312,43 = -5,43
So, how do I input these values at the SCT software? Stock values are MAP sensor offset: 0.7514 and MAP sensor slope: 0.0353.
New values would be offset 0.543 and slope 0.06577 ?
The unit of these values are not specified, so I'm a little confused.
Thank you!
