Cm870 black smoke

[3406E]

Cm870 800+k miles. 04 engine. Should my pipes be that black? Egr not deleted. I doesn’t have smoke at idle but when I hit the throttle going down the road I do get some smoke but not drastic but I can see black smoke when im pulling hills and again not drastic like a turned up cat. The question is why is both my pipes so black. Image down below. Thanks for your help. And to add this truck is bone stock at 475 governed at 65.