[DieselX544]

Originally Posted by RL18

It won't go into limp. It will just throw a code.

So here's what you do... full egr cooler delete, meaning coolant lines blocked off (big plus), egr hot side is blocked off, and race pipe is installed where egr valve use to be. Now, the important part. Leave the egr valve secured to the side in the engine bay and keep it plugged in.

What tune do you have?