DPF "on" Tunes & performance
just out of curiosity how do the Spartan "on road" tunes do? I was just curious how they do if you turn the EGR off and a bigger tune i.e.) the 150hp on road tune. Also, if you haven't removed your DPF yet what happens when you run an off road tune??? Doesn't it just not go into regen mode? or is there more to it than that? I understand the bigger tunes will be too much for the stock exhaust but what if you ran say, the 100hp "off road" tune but still had your stock exhaust on??