We've all heard from forums and numerous outlets that deleting the DPF and SCR on your Powerstroke is the way to go these days. What we have never seen backing these claims is data and tests. It's always hearsay that seem to find it's way to fueling the debate on whether to delete or keep your emissions system in-tact. As you probably know, we like to put these tales to the test to try to figure out for ourselves what the truth is behind what you should really do with your factory emissions system.