Hows it going? New to the site and to Broncoing. Just changed my stock manifolds to full length headers and 2 1/2 pipes into one muffler. at start up im getting a pop from the tail pipe. thought it might be a firing order issue but all wires were good. the egr is disconnected from where the manifolds were but still plugged in. there is a rough idle and the pop goes away until deceleration. am i missing something. can i remove the egr ??? this is an off road Bronco so emissions arent an issue.