Little background, truck is a 14 6.2 with headers/ory to a 22" magnaflow, airaid Tube with k&n filter, and khp tune. When the truck sits over night or through the day, basically its first cold start, I get this popping from the exhaust, clear as day comes from there and out back to the 5" tip I have. It only does it in a 20 second range, some days it's worse than others, but it throws a code for rough engine idle, even though nothing's wrong. I've read and been told maybe lean pop, but never dealt with it before. I don't think it's tune related but hell it may be. Now it's just annoyin. I changed the plugs the other day just to see but no change. Kinda grabbin at straws here...any help is appreciated

When I get off work I'm gonna swap out the k&n thinkin maybe the oil is gettin gunk on the MAF, throw some intake cleaner down its throat and see what happens..here's a video of it