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Reading boost from data logger

OK, I read this from an old (2004) thread from another DSM web site I can't find again. They weren't very clear on the how to part. Anyway, they talked about reading boost using the 1.8 version and either a 2.5, 3.0 GM map or a Motorola chip connected to something they called an EGTR or EGRT connection. Can anyone elaborate on this. As soon as (if) I get my data logger running, I would like to have this option. Forgive me if I'm behind the curve, but this is life in Alaska. I did a search to no avail, so all the help I can get would be very much appreciated. I'm an old fart and not very computer literate.
 

steve

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Sep 11, 2003
Messages
18,897
Location
NJ
Check on the 3si website, thats where it was written up.
 

Do a search for +MAP +log +EGR:
Posts

Basically:
1) you connect +5 volts and ground to a GM 3-bar MAP sensor.
2) The middle pin, if I recall, is the variable output, which you connect to pin #15 of the ECU.
3) Use Pocketlogger or MMCD to log boost on the EGR Temp probe.
 

quasimondo

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Joined
Jun 6, 2004
Messages
3,680
Location
Nairobi, Kenya
That connector is for the EGRT. On Federal ECU's (any ecu that didn't have California emissions), that connector is not used. It's still active though and will still read a 0-5v input.
 

Quote:
Thanks. They mentioned a connector by the intake manifold.



My 1991 GVR-4 does NOT have that connector, or even a wire in the ECU harness. My 1992 had the connector taped up behind the aircan, if I recall.
 

Thanks again gents /ubbthreads/images/graemlins/worthy.gif Mines a 92, so i'll see if i have the connector. If not, pin 15 it is.
 
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