Quote:
Originally Posted by TDIwyse
I did a little testing on the electronic egr after work. From the initial measurements, Stan appears to be doing something I find clever ...
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Well, yesterday I was monitoring the "pintle position" pin on the EGR valve to see if the valve was staying closed even when the DDE was calling for it to be open.
Couldn't find something like this for our valve, and our pinout isn't quite the same, but this shows what the 5 pins on the electronic EGR do/are for.
http://easyautodiagnostics.com/gm_eg...gr_valve_1.php
Unfortunately, the indication from this measurement is that the EGR is not coded out, and is still operating as it was stock. However, because the throttle valve is fully open all the time, there will still be less exhaust fumes going back into the engine due to less suction caused by having the throttle partially closed (previously the throttle would close some to help increase EGR flow when EGR % was increased).
This is a little disappointing since I was told it would be coded out. Still waiting for Stan to respond to these latest measurements of the EGR behavior.