Returned to Greenville from Jacksonville, NC via Raleigh. Had about half an hour of stop n go driving in a construction zone, plus the elevation gain is about 1000 feet. Got 17. 4 mpg which is plus 3 mpg over the old EGR plugged mileage. Now over 30K miles that equates to roughly 370 less gallons of fuel consumed. That means I will have an extra $1400 annually in my pocket by making a free mod to my truck. Unplug your EGR for free savings! Ignore the CEL and plug it back in before making a visit to the dealer.
Ken