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]

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.

 

Thanks. They mentioned a connector by the intake manifold.

 

[quasimondo]

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.