Originally Posted by Diesel Freak
My EGR is bypassed with freeze plug in the up pipe and EGR valve welded shut.
Yes, I also get the P0404 code. I have been clearing it and it reappears. I'm gonna try and run it and see if the cell goes out. I saw a post where one eventually went out
Code won't go away. I had the Banks 6 Gun and it ran a lot better before I blocked off the EGR. After it was blocked, I reinstalled the 6 Gun and it would set the code. It would defuel the truck. I've got a friend with a 2004 Cummins with a 70hp smarty jr. tune and I could smoke him before I had the studs installed and blocked the EGR. After I got it back we raced and he pulled 2 truck lengths on me.
I know that no one seems to like Banks. That is why I no longer have the 6 Gun and am going to get an SCT.
If I were you, I would ditch the Bully Dog and go with the SCT and custom tunes to shut the EGR off.