Somebody, please. EGR
Give up on my EGR P0401 Insufficient Flow cel. Replaced the egr valve, the dpfe sensor, the egr solenoid, and cleaned out the throttle body & intake plenum. I don't have the slightest god damn clue what to do next.
I do have long tube headers installed. I don't think that should mess with my EGR system considering it's still all connected. Could that possibly have anything to do with it?