A large percentage of the problems with the 6.7 are from the DPF/SCR/DEF system itself. While you will probably never recoup the cost of a delete on a 6.7, one of the biggest benefits in doing it is the better fuel mileage. The extra cost of regens and DEF add up time. As far as most performance gains go, there's no real reason to delete just for that, especially just for a tow pig. The tuners are getting pretty good numbers with emissions in-place tunes these days. Now if you're really planning on jacking up the power numbers with big turbos, injectors, intake systems, etc. then you would be silly not to delete to start with.
As mentioned above, with good tuning, today's diesels burn so clean that there's really no need for these systems at all, but that's what you get from an untethered EPA and a few snowflakes. It is my opinion, when it's all said and done, that the DPF/SCR/DEF systems and the baggage associated, are as big of a polluter as anything.
As mentioned above, with good tuning, today's diesels burn so clean that there's really no need for these systems at all, but that's what you get from an untethered EPA and a few snowflakes. It is my opinion, when it's all said and done, that the DPF/SCR/DEF systems and the baggage associated, are as big of a polluter as anything.
