Just got my MBRP 4" in what do i do with the lines running to the DPF??

Just unplug the egt sensors on top of the frame rail and unplug the pressure lines where they go to the little black box.

so is that pretty easy i dont have to cap any line off

You don't have to I didn't there is nothing that comes out, they just measure the exhaust pressure before and after the dpf