We've all heard from forums and numerous outlets that deleting the DPF and SCR on your L5P is the way to go. What we have never seen is data or tests backing up these claims. It's alway seems to be hearsay that fuels the debate on whether or not to delete your emissions in-tact truck. 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 them. What should you really do with your factory emissions system when it comes to whats best for you and your truck? Find out below.