John from ca answered on september 11 2017.
Gm 3 bar map sensor.
Gm makes a 3 0 boost map sensor that can be made to work with megasquirt.
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.
So you will have to have the vehicles calibration changed for the new offset.
The echlin equivalent 3 bar sensor is pn crb219481.
This sensor can be used up to 29 psi of boost.
This item gm 3 bar map sensor kit custom turbo 3bar 12223861 manifold pressure as210 44psi 3 bar map sensor for various gm models with connector pigtail manifold absolute pressure map sensor 12223861 fits for gm buick gmc chevrolet.
The 55573248 is a 1 bar map sensor.
Calibration is linear with 1 1 kpa at 0 volts and 315 5 kpa at 5 volts.
It was used on the 1989 turbo trans am with the 3 8l turbocharged v6 engine and is gm part number 16040749 also available as holley pn 538 23.
Description map sensor gm 3 bar manifold absolute pressure sensor standard compatible with the ms3pro and all flavors of the megasquirt ems microsquirt ems.
It is possible that detroit is.
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.
Map sensor assembled in the usa unlike the current delphi production.
This item 3 bar map sensor for various gm models with connector pigtail otuayauto 12569240 map manifold absolute pressure sensor replacement for impala malibu k1500 s10 buick century oldsmobile alero fits 1985 2004 gm vehicles oem aftermarket.