MS3 without MS3x external MAP

[frdstang93]

Hello,

I am trying to figure out what I need to do to setup an external gm 3 bar MAP on a basic ms3 utilizing the on-board as a real time baro. I have looked all over the web and haven't really come up with anything. Its a 3.57 board MS3. I'm also a bit confused on what input I would use within Tunerstudios.

Thank you for your help

[dontz125]

Take a look at the attached:

TS MAP Sensors.JPG

For constant baro, you need "Two independent sensors" selected; in your case, you want the "Mainboard" sensor.

Since you don't have the MS3X board, I assume you're going to want to use JS4 or JS5 as your off-board sensor inputs; you COULD use the MS3 Expansion header ADCs, but it's a little more work. Select either JS4 or JS5, as desired.

Note that you'll need to add a filter circuit for the MAP signal on a bit of protoboard.