I have a taste for a loud EcoBoost that most people don't seem to have, mine is currently muffler and resonator deleted out of the back through a 4" MBRP Catback. I drove it around once when I just deleted the muffler and hadn't attached the rest of my 4" kit, so it was exiting halfway through the cab. I loved the sound, it was a little loud for me, but I want a middle ground between that and out the back. I was thinking a Pre axel dump (I would just put a 45 Degree elbow after my straight pipe) would be a good mix between the sounds. However I've heard that carbon monoxide can be a problem, I measured where it would come out on my truck and it would be past the cab, could I still have carbon monoxide issues.