Originally Posted by whyteLegend

THANKS pnoye2, I cleaned the EGR valve and pipe (clugged very bad nothing was getting through it) with a few bottles of carb cleaner, flat head screw driver & clothes hanger. Took it for free restest and PASSED ... went down 550 points on the NOx ... I also replaced the EGR gasket cost $7.50 retail at the dealer.