Wiring map sensor into external output

[badls1]

I was wondering if I can wire a 2 bar map sensor into my v1 as an external input. How would I do this. I'm trying to log pre intercooler boost pressure with another map sensor.
Thanks, curt

[joecar]

Yes, thru one of the 0-5V analog inputs... and then we can create a calc pid for it (so it shows in psi and kPa).

[ferocity02]

Where would you get 5V reference for this? Can you tap into another 5V source or is that a no-no?

[badls1]

Yes, thru one of the 0-5V analog inputs... and then we can create a calc pid for it (so it shows in psi and kPa).

Okay sounds good. I'm actually going to need to go 3 bar since it will probably be more than 15 psi. Will one like this do the trick?
http://item.mobileweb.ebay.com/viewi...id=67050350433

[joecar]

Where would you get 5V reference for this? Can you tap into another 5V source or is that a no-no?

You can borrow an existing 5V reference... and then measure the voltage of the 5V reference to see if you've created a problem by borrowing it.

[badls1]

okay I ordered a 3 bar map sensor. can wire this directly into the pcm somehow or will I be better off using one of the ext. inputs on my v1?

[ferocity02]

You could wire it into the EGR wiring sensor wiring. That's what I did for my fuel pressure sensor.

[joecar]

You could wire it into the EGR wiring sensor wiring. That's what I did for my fuel pressure sensor.

That would work.

[badls1]

my car doesn't have any egr wiring. can I hook it up through the a/c press. sensor?

[badls1]

got it wired in. how do I go about making my pid for it?