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Old 01-10-2012, 03:58 PM   #30 (permalink)
UFO
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Join Date: Sep 2010
Location: Denver, CO
Posts: 1,300

Colorado - '17 Chevrolet Colorado 4x4 LT
90 day: 23.07 mpg (US)
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Right, the N18 alone controls the EGR flow. What I am saying is there is no intake throttle to help regulate the flow, like on PD VWs, or my Jeep Liberty CRD.

What I have learned since I wrote that is the EGR level is only checked at idle, so it is irrelevant what the MAF response to EGR is at any other engine condition. At the time I did not have enough output range in my circuit to make the ECU happy. My freeware VAG-COM has been invaluable.
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