I doing an electronic boost gauge project for my car so does anyone knows where I can find the GM 3bar map senor voltage readout?

 

You can find it at http://www.diy-efi.org with a simple search.

You remember highschool algebra? Grab some graph paper, you get 1.6 volts at 1 atm and 5 volts at 29 psi above atm. The output of the GM 3 bar - or any non-Ford MAP - is linear and graphs as a straight line.

 

i'm finding these numbers at that site... thoughts?

100 Kpa, 4.9V 90 Kpa, 4.4V 80 Kpa, 3.8V 70 Kpa, 3.3V 60 Kpa, 2.7V 50 Kpa, 2.2V 40 Kpa, 1.7V 30 Kpa, 1.1V 20 Kpa, 0.6V 10 Kpa, 0.3V

 

Yeah, that's a 1 bar sensor for NA use.

1 bar ~ 100 kpa. The first bar gets you to atmospheric, more or less.

 

Hey thanks buddy that's exactly what I've been looking for