You can have a high power tune that doesn't roll coal. You need more air to match the extra fuel. Trouble is, you run hotter with a non-coal tune and end up with a bunch of NOx, which is what DEF is for.If only the amount of soot coming out of direct injected gasoline engines were as visible as direct injected diesels, you would see that this is all around you. But out of sight, out of mind, and it is only the one that can be seen that is viewed as the bad one even though the PM from direct injected gasoline engines is much worse for you do to how small the PM is.
I am not a person that likes to roll coal, and you can delete without rolling coal by staying with a lower powered tune. Instead of going with the +80hp tune, then I would stick with the +0hp tune or +30hp tune. The +50hp and +80hp will emit a lot of PM if you get on it, but then again, so does a tuned direct injected gasoline vehicle like my old F150 Ecoboost.
You can have a high power tune that doesn't roll coal. You need more air to match the extra fuel. Trouble is, you run hotter with a non-coal tune and end up with a bunch of NOx, which is what DEF is for.