MAP Sensor info?

[grnchevyz]

Picked up what is supposedly 3bar GM MAP sensor.

No part # on the unit, GM stamp on top and it is stamped with

103 7270

From what I gather, 7270 means either 1997 or 1987 270th day.

103 I can't find in any listing for map sensor stamps.

1 Bar: 039, 460, 883, 876
2 Bar: 886, 012, 539, 609, 701
3 Bar: 749, 861

Is all I could find...

Anybody have insight on this?

 

[the_mork]

Why not just install it, log it and see if it pegs out around 3psi?

 

[grnchevyz]

It is installed using the stock MDP wiring, sensor left unplugged. Reads 9-10psi at idle and pegs at 30psi by 1psi of actual boost.

It almost seems like its just an MDP sensor.

Here's the log.

 

[the_mork]

What is your scaling? I'm using x*0.17886+.161-14.192 in Evoscan. Otherwise yes, I would suggest that it is probably 1bar which is the most common GM map.

 

[grnchevyz]

yeah, I think this is a 1bar...thanks for the insight!

 

[bling5tatus]

Wait, what are you trying to do? Just replace your mdp?

 

[99gst_racer]

Wait, what are you trying to do? Just replace your mdp?

It seems obvious what he's trying to do. He's installing a MAP sensor for datalogging purposes, and using the MPD wiring for the ECU signal.

 

[toofast82]

If its pegging full before 1psi, then its most likely a "1Bar" as said

 

[bling5tatus]

It seems obvious what he's trying to do. He's installing a MAP sensor for datalogging purposes, and using the MPD wiring for the ECU signal.

Paul,

sometimes I wonder with 2g owners... he didn't specify so I asked... not a big deal right, no need for snyde remarks.

 

[grnchevyz]

bling5tatus, wiring up a MAP for tuning purposes with DSMLink using the MDP wiring. I should have specified....

It IS a 1bar confirmed by Dave at Link.

 

[Ceddy]

The Evo X has a 3 bar MAP sensor thats fits the MDP spot perfect. Same harness I think also. Thats what a lot of the Evo guys are using to log boost.

They are a little pricey though, since they are a dealer item.
----------------
Sorry for the bad info, the EvoX MAPs are 3 bar.

You can get OmniPower MAPs the fit the MDP hole. In 4bar.

 

[the_mork]

That is incorrect. It is a 3bar map sensor which is the same as the 3bar JDM evo9 sensor.

 

[bling5tatus]

Do NOT pay high price for Omni Power MAP sensors... they are Motorola MAPS ($6-$12) in a plastic case... they are making well over 1000% profit on the gomers that buy these.

Look at freescale.com... that's the maps that omni repackages and marks up.,